Updated on 2025/04/09

写真a

 
Katayama Toru
 
Organization
Graduate School of Engineering Division of Aerospace and Marine-System Engineering Professor
School of Engineering Department of Marine System Engineering
Title
Professor
Affiliation
Institute of Engineering
Contact information
メールアドレス
Affiliation campus
Nakamozu Campus

Position

  • Graduate School of Engineering Division of Aerospace and Marine-System Engineering 

    Professor  2022.04 - Now

  • School of Engineering Department of Marine System Engineering 

    Professor  2022.04 - Now

Degree

  • 博士（工学） （ Others ）

Research Areas

  • Frontier Technology (Aerospace Engineering, Marine and Maritime Engineering) / Marine engineering  / Navalarchitects and Ocean engineering

  • Frontier Technology (Aerospace Engineering, Marine and Maritime Engineering) / Marine engineering

Research Interests

  • tank test

  • underwater vehicle

  • roll damping

  • computational fluid dynamics

  • damaged ship stability

  • 多胴船

  • Stability

  • Safety

  • High-Speed Planing Craft

  • offshore wind power

  • high speed planing craft

  • high speed craft

  • ship stability

  • naval architecture

  • autonomous operation

  • seekeeping

  • planing craft

  • 浮体式プラットフォーム

  • 津波対応型救命艇

  • offshore wind observation

Research subject summary

  • 船舶の安全性関する研究

  • 海洋構造物に作用する波力とその応答に関する研究

  • 高速艇の性能評価法の開発

Research Career

  • Development of Performans Evaluation Method of flying boat

    flying boat, taking off from the water, landing on the water 

  • 損傷時および非損傷時船舶復原性・安全性に関する研究

    損傷、復原性、安全性、波浪、海洋風 

  • 海洋開発機器の波浪中運動性能に関する研究

    セミサブ、渦放出、非線形、運動、流体力 

  • Development of Performans Evaluation Method of High-Speed Planing Craft

    high speed craft, planing craft, resistance and propalsion, instability, maneuverbility 

Professional Memberships

  • Asia-Pacific Workshop on Marin Hydrodynamics

    2016.09 - Now   Overseas

  • International Conference on the Stability of Ships and Ocean Vehicles

    2015.06 - Now   Overseas

  • The Society of Naval Architects & Marine Engineers

    2012.06 - Now   Overseas

  • The Society of Naval Architects and Marine Engineers (SNAME)

    2012.06 - Now

  • International Towing Tank Conference

    2011.09 - Now   Overseas

  • 日本船舶海洋工学会　日本試験水槽委員会

    2011.02 - Now   Domestic

  • 日本クルーズ＆フェリー学会

    2010.10 - Now   Domestic

  • The Academic Society for Cruise & Ferry, Japan

    2010.10 - Now

  • 舟艇協会会友会

    2007.04 - Now   Domestic

  • THE BOAT ASSOCIATION OF JAPAN

    2007.04 - Now

  • 水産システム協会

    2005.04 - Now   Domestic

  • 日本船舶海洋工学会

    2005.04 - Now   Domestic

  • the Japan Society of Naval Architects and Ocean Engineers

    2005.04 - Now

  • Fishing Boat And System Engineering Association of Japan

    2005.04 - Now

  • 西部造船会

    2001.04 - 2005.03   Domestic

  • 日本造船学会

    1997.04 - 2005.03   Domestic

  • 関西造船協会

    1992.04 - 2005.03   Domestic

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Committee Memberships (off-campus)

  • 第15回大阪公立大学-サノヤス技術交流会　講師   株式会社　新来島サノヤス造船　木島製造所  

    2022.11 

  • 環境省受託事業：「令和4年～5年度潮流発電による地域の脱炭素化モデル構築事業評価審査委員会委員」   有限責任監査法人トーマツ（環境省より受託）  

    2022 - 2024.03 

  • 科学研究費委員会専門委員（基盤研究B）   独立行政法人日本学術振興会  

    2021.11 - 2022.10 

  • 監事   日本クルーズ＆フェリー学会  

    2021.11 - Now 

  • Executive Committee member   ITTC  

    2021.06 - Now 

  • 委員長   日本船舶海洋工学会JTTC  

    2021.06 - Now 

  • 令和3年度潮流発電技術実用化推進事業審査委員会委員   有限責任監査法人トーマツ（環境省より受託）  

    2021.04 - 2022.03 

  • 潮流発電技術実用化推進事業審査委員会 委員   有限責任監査法人トーマツ  

    2020.04 - 2021.03 

  • 審査委員   有限責任監査法人トーマツ  

    2019.04 - 2020.03 

  • 運営委員   日本船舶海洋工学会関西支部  

    2017.05 - Now 

  • 代議員   日本船舶海洋工学会  

    2016.12 - Now 

  • International Standing Committee member   Asia-Pacific Workshop on Marin Hydrodynamics  

    2016.09 - Now 

  • International Standing Committee member   STAB  

    2015.06 - Now 

  • 波浪中を航走する小型高速旅客船における乗客の安全性に関する研究事業   日本小型船舶検査機構  

    2014.04 - 2015.03 

  • 小型高速旅客船省エネ運航調査研究委員会   公益財団法人　九州運輸振興センター  

    2014.04 - 2015.03 

  • 小型高速旅客船省エネ運航調査研究委員会   公益財団法人　九州運輸振興センター  

    2014.04 - 2015.03 

  • 「波浪中を航走する小型高速旅客船における乗客の安全性に関する研究事業委員会委員   日本小型船舶検査機構  

    2014.04 - 2015.03 

  • 「波浪中を航走する小型高速旅客船における乗客の安全性に関する研究事業委員会委員   日本小型船舶検査機構  

    2014.04 - 2015.03 

  • 波浪中を航走する小型高速旅客船における乗客の安全性に関する研究事業   日本小型船舶検査機構  

    2013.04 - 2014.03 

  • 小型高速旅客船省エネ運航調査研究委員会   公益財団法人　九州運輸振興センター  

    2013.04 - 2014.03 

  • 小型高速旅客船省エネ運航調査研究委員会   公益財団法人　九州運輸振興センター  

    2013.04 - 2014.03 

  • 「波浪中を航走する小型高速旅客船における乗客の安全性に関する研究事業委員会委員   日本小型船舶検査機構  

    2013.04 - 2014.03 

  • 小型高速旅客船省エネ調査研究委員会   財団法人　九州運輸振興センター  

    2012.04 - 2013.03 

  • 波浪中を航走する小型高速旅客船における乗客の安全性に関する研究事業   日本小型船舶検査機構  

    2012.04 - 2013.03 

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Awards

  • Best Paper Award JASNAOE

    Tomoki Taniguchi, Toshifumi Fujiwara, Jun Umeda, Tadashi Nimura, Toru Katayama

    2022.05   JASNAOE   Validation of Real-Time Nonlinear Model Predictive Control on Point Absorber Type Wave Energy Converter by Tank Test

  • 日本船舶海洋工学会賞（論文賞）

    2013.05   日本船舶海洋工学会  

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    Country：Japan

  • 日本造船工業会賞

    2013.05   日本造船工業会  

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    Country：Japan

  • 日本船舶海洋工学会関西支部支部長賞「流体力学関連学生研究組織「KFR Jr.」の設立」

    2011.05   日本船舶海洋工学会関西支部支部  

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    Country：Japan

  • Excellent Presentation Student Award（著者に学生を含む優秀論文賞）

    2010.07   海洋流体力学に関するアジア太平洋地域ワークショップ組織委員会  

  • 日本船舶海洋工学会関西支部支部長賞　「高速曳航試験システムと滑走艇の性能評価法」

    2009.05   日本船舶海洋工学会関西支部支部  

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    Country：Japan

  • 日本船舶海洋工学会関西支部支部長賞　「長年にわたり、小・中学生を対象に、海や船への愛着を育み、理科教育に貢献するための「青少年サマーセミナー」を、大学院生を中心に企画・実施したこと」

    2008.05   日本船舶海洋工学会関西支部支部  

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    Country：Japan

  • The First Grade Prize for the Excellent Student Paper（著者に学生を含む最優秀論文賞）

    2006.06   海洋流体力学に関するアジア太平洋地域ワークショップ組織委員会  

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Job Career (off-campus)

  • Osaka Metropolitan University   Graduate School of Engineering, Division of Aerospace and Marine-System Engineering

    2022.04 - Now

  • Osaka Prefecture University   Graduate School of Engineering Division of Aerospace and Marine System Engineering

    2016.04 - 2022.03

Papers

  • Experimental and numerical investigation on the influence of bilge keel shape on roll damping Reviewed International coauthorship

    Hasan Islam Copuroglu, Emre Pesman, Toru Katayama

    Marine Structures   100   2025.03（ ISSN:0951-8339 ）

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    Publishing type：Research paper (scientific journal)   Kind of work：Joint Work   International / domestic magazine：International journal  

    Excessive roll amplitudes due to roll motion are undesirable in marine ships. Consequently, it is imperative to conduct a detailed analysis of roll motion and the associated roll damping characteristics. This study experimentally and numerically investigates the roll damping characteristics of bilge keels with various geometric shapes on a ship model under different roll amplitudes. By comparing the non-dimensional roll damping coefficients obtained from experiments and numerical analyses, it is observed that bilge keels with geometries differing from the conventional plate shape exhibit distinct roll damping coefficients. Specifically, bilge keels with sharper tip ends demonstrate higher roll damping coefficients. Based on these findings, it is recommended that the corners and tip end of bilge keels be sharpened to enhance the roll damping coefficient.

    DOI： 10.1016/j.marstruc.2024.103725

  • Experimental validation of data-driven reactive control strategy for wave energy converters: A Gaussian process regression approach

    Jun Umeda, Tomoki Taniguchi, Toru Katayama

    Ocean Engineering   308   2024.09（ ISSN:0029-8018 ）

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    Publishing type：Research paper (scientific journal)  

    Wave energy is a renewable energy source that can generate electricity without emitting carbon dioxide using wave energy converters (WECs). WECs face several challenges, such as effectively harnessing wave energy, ensuring operational safety, and implementing cost-saving measures. In this study, a data-driven reactive control strategy for WECs using Gaussian process regression is experimentally validated. The control strategy aimed to maximize energy absorption while satisfying physical constraints without a WEC dynamic model. In this study, the Gaussian process regression model represents a WEC dynamic model using an approximation function based on the input/output data. Experimental validation results confirmed that the proposed data-driven reactive control strategy effectively controlled the WEC and improved its performance using the Gaussian model. Moreover, performance was improved under different wave conditions compared to those used during training. The control strategy can be useful in situations where conventional methods cannot realize ideal control parameters, such as when substantial model errors exist or the WEC dynamic model changes over time. The data-driven approach that uses Gaussian process regression reduces learning costs compared to other machine-learning methods. It also has stable control performance because it is independent of the training dataset. The potential of data-driven approaches for optimizing WEC control strategies was highlighted.

    DOI： 10.1016/j.oceaneng.2024.118264

  • Numerical Investigation of Aerodynamic Interactions between Rigid Sails Attached to Ship Reviewed

    Akane Yasuda, Tomoki Taniguchi, Toru Katayama

    Journal of Marine Science and Engineering   12 ( 8 )   1425 - 1425   2024.08（ eISSN:2077-1312 ）

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    Publishing type：Research paper (scientific journal)   International / domestic magazine：International journal  

    As part of the strategy to achieve net-zero Greenhouse Gas (GHG) emissions in international maritime shipping, there is ongoing exploration into the use of wind propulsion systems as auxiliary ship propulsion devices. When considering a rigid sail as the wind propulsion system, evaluating the performance of a single sail is relatively simple. However, assessing the performance of multiple sails is more challenging due to the interference between the sails and between the sails and the hull. In this study, the thrust characteristics of two rigid sails attached to a ship are investigated by using Computational Fluid Dynamics (CFD). This includes considering the interference effects between the sails themselves and between the sails and the hull. The research reveals the innovative optimized angle of attack for maximizing thrust under tailwind conditions. At 150° in relative wind direction, the best performance is achieved with a low angle of attack on the fore side sail and a high angle of attack on the aft side sail. At 180° in relative wind direction, a high angle of attack on the fore side sail and a low angle of attack on the aft side sail yield the best results. Here, a “low” angle of attack means that the lift force is greater than the drag force, while a “high” angle of attack means the drag force is greater than the lift force. In this study, the force in the ship’s forward direction is only focused on optimizing the angles of attack of the two sails. However, the side forces caused by the sails are also significant for the ship’s sailing conditions. Therefore, future work will involve optimizing the angles of attack under drifting conditions.

    DOI： 10.3390/jmse12081425

  • Development of Low Energy Consumption Motion Stabilized Platform for Offshore Wind Observations Floating Platform Reviewed

    Yusuke Yamamoto, Tomoki Taniguchi, Toru Katayama

    Volume 4: Ocean Space Utilization   4   2024.06（ ISBN:9780791887813 ）

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    Publishing type：Research paper (international conference proceedings)   International / domestic magazine：International journal  

    Abstract

    It is necessary to obtain accurately actual wind state at the sea where offshore wind farm will be constructed, in order to guarantee its safety and profitability. In this study, it is proposed that motion of the non-restoring counter-weight type motion stabilized platform on a buoy is made smaller than that of the buoy by using a linear damper to get regenerative energy and skyhook spring and damper controlled by using the regenerative energy. Then, the energy consumption and motion reduction performance of the system is evaluated, and it is tried by system optimization that the energy balance becomes positive.

    DOI： 10.1115/omae2024-123594

  • Study on Wear and Breakage Estimations for Single Point Mooring Chain of Offshore Floating Platform Reviewed

    Toru Katayama, Ryoya Hasunuma, Yusuke Yamamoto, Tomoki Taniguchi, Yusuke Fukute, Masahiro Goto

    Volume 4: Ocean Space Utilization   4   2024.06（ ISBN:9780791887813 ）

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    Authorship：Lead author,　Corresponding author   Publishing type：Research paper (international conference proceedings)  

    Abstract

    In this study, a practical estimation method for wear and breakage of mooring chain is investigated. In the method, mooring tension and sliding angle between mooring links are estimated from measured buoy’s motion. At the towing tank of Osaka Metropolitan University, by using motion of a small scale model of buoy with single point slack moored for 75m sea depth, its mooring tension and its motion of the mooring chain are measured in irregular waves. From the results, it is found that the mooring tension at the mooring point is correlated with the vertical acceleration on the buoy regardless of significant wave height and period. Furthermore, it is also found that the sliding velocity at the mooring point is proportion to the pitching angular velocity of the buoy. These results indicate that the wear condition and the breakage possibility at mooring point can be estimated by measuring buoy’s motion. In addition, the feasibility of the wear and breakage possibility estimation for whole mooring chain by using an numerical simulation assimilated to the measured data is investigated.

    DOI： 10.1115/omae2024-128310

  • Investigation of the Scale Effects on Roll Motion for The Ship <i>Bettica</i> Using Numerical Simulation Reviewed

    Nguyen Thi Ha Phuong, Naofumi Yoshida, Tomoki Taniguchi, Toru Katayama

    Polish Maritime Research   31 ( 2 )   4 - 12   2024.06（ ISSN:12332585 ） （ eISSN:2083-7429 ）

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    Publishing type：Research paper (scientific journal)  

    Abstract

    In this paper, we focus on analysing scale effects on the roll motion of the Italian ship Bettica using a numerical method. First, the roll decay motion of the ship is simulated at both the model scale and full scale, and the predicted results are compared with experimental data to validate the numerical strategy. The results show that there are scale effects that cause the difference in roll amplitudes between the model and the full-scale ship. To investigate the viscous effects on the roll damping components, forced roll simulations are carried out at the model scale and full scale, and the roll damping components (frictional, wave-making, eddy-making, bilge keel and lift components) are obtained. An analysis of these roll damping components indicates that the frictional component is influenced by scale effects, especially in the case of zero or low forward speed. We also show that the bilge keel component is affected by scale effects when the height of the bilge keels is reduced to a certain value below the boundary layer thickness. The velocity fields around the bilge keels are analysed to better understand the scale effects.

    DOI： 10.2478/pomr-2024-0016

  • The effect of a ship's acceleration and deceleration on parametric roll motion in regular head waves at resonance conditions Reviewed

    Emre Pesman, Hasan Islam Copuroglu, Toru Katayama

    Ocean Engineering   291   2024.01（ ISSN:00298018 ）

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    Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.oceaneng.2023.116367

  • Characteristics of Thrust and Rudder Force at Low Speed of Outboard Engine attached to Small Boat obtained by Fully Captive Oblique Towing Test and Required Experimental Conditions to get them Reviewed

    Hiroyuki Hatakenaka, Seito Yamauchi, Kaichi Ogura, Mizuki Kinugasa, Tomoki Taniguchi, Toru Katayama

    Journal of the Japan Society of Naval Architects and Ocean Engineers   39   45 - 55   2024（ ISSN:1880-3717 ） （ eISSN:1881-1760 ）

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    Publishing type：Research paper (scientific journal)  

    DOI： 10.2534/jjasnaoe.39.45

  • Study on Characteristics of Frictional Resistance of Prismatic Stepped Planing Surface and its Scale Effects by using a commercial CFD Reviewed

    Toru Katayama, Tatsuki Nanami, Tomoki Taniguchi, Shohei Ozeki, Toshio Watanabe

    Journal of the Japan Society of Naval Architects and Ocean Engineers   39   111 - 124   2024（ ISSN:1880-3717 ） （ eISSN:1881-1760 ）

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    Authorship：Lead author,　Corresponding author   Publishing type：Research paper (scientific journal)  

    DOI： 10.2534/jjasnaoe.39.111

  • Development of Dynamic Model of Wave Energy Converters Using Gaussian Process Regression Reviewed OA

    Umeda Jun, Taniguchi Tomoki, Katayama Toru

    Journal of the Japan Society of Naval Architects and Ocean Engineers   38   117 - 125   2023.12（ ISSN:1880-3717 ） （ eISSN:1881-1760 ）

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    Publishing type：Research paper (scientific journal)  

    Accurate dynamic models of wave energy converters are essential for the design of these devices. To create an accurate model, it is necessary to consider not only the free surface effects of water but also the mechanical friction forces and cogging forces of the power takeoff system. Nevertheless, these are hard to calculate theoretically. Consequently, this study addresses the development of a nonparametric dynamic model that can consider complicated forces, such as mechanical friction forces and cogging forces of a power take-off system. A regression model using a Gaussian regression process was developed to estimate the heaving displacement and velocity of a wave energy converter based on the data measured in tank tests. This regression model predicted the generated output power more accurately than a numerical simulation model based on the system identification. Additionally, it was shown that the accuracy of the regression model does not decrease significantly as the observed noise in the training data increases. An accurate dynamic model of wave energy converters based on measured data can be used for a wide range of applications, including the development of new control methods, evaluation of power production, and estimation of the maximum displacement of wave energy converters.

    DOI： 10.2534/jjasnaoe.38.117

    Repository URL： http://hdl.handle.net/10466/0002001578

  • Derivation of State-Space Equation of Floating Point-Absorber Wave Energy Converter Under Motion Constraints and Its Numerical Simulation With Nonlinear Model Predictive Control Reviewed OA

    Journal of the Japan Society of Naval Architects and Ocean Engineers   ( 38 )   51 - 63   2023.12（ ISSN:1880-3717 ）

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    Publishing type：Research paper (scientific journal)  

    DOI： 10.2534/jjasnaoe.38.51

    Repository URL： http://hdl.handle.net/10466/0002001580

  • LSTM-Based Model Predictive Control for Motion Stabilized Platform of Doppler Lidar for Offshore Wind Observation Reviewed

    Mizuki Kinugasa, Yusuke Yamamoto, Daisuke Terada, Toru Katayama

    Volume 4: Ocean Space Utilization, ASME 2023 42nd International Conference on Ocean, Offshore and Arctic Engineering   4   2023.06（ ISBN:9780791886861 ）

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    Authorship：Last author   Publishing type：Research paper (international conference proceedings)  

    Abstract

    In this study, the applicability of a controlled method based on LSTM (Long Short Term Memory) to motion reduction of a rigid body swing as a motion stabilized platform to place on floating platform is investigated numerically. First, for a single pendulum type motion stabilized platform on a spar-buoy type floating platform with tension-mooring, the sequential control torque required to cancel external torque is calculated. Next, one step ahead motion velocity and acceleration of the spar-buoy are predicted by using LSTM model, which is a kind of machine learning model for time series forecasting. Based on the predicted results, the effectiveness of model predictive control to reduce its motion is tried to be confirmed. However, it is difficult to reduce the motion because of prediction error. Then, skyhook dumper is applied to damp undesired control torque caused by the error. As the result, its pitch becomes less than one degree on the moderate wave condition, and magnification factor of motion amplitude of the single pendulum type motion stabilized platform becomes less than one.

    DOI： 10.1115/omae2023-108083

  • Proposal for Motion Stabilized Platform of Doppler Lidar for Offshore Wind Observation and its Validation Reviewed

    Yusuke Yamamoto, Mizuki Kinugasa, Hiroki Morota, Toru Katayama

    Volume 4: Ocean Space Utilization, ASME 2023 42nd International Conference on Ocean, Offshore and Arctic Engineering   4   2023.06（ ISBN:9780791886861 ）

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    Authorship：Last author   Publishing type：Research paper (international conference proceedings)  

    Abstract

    In this study, a rigid body swing with motion control as a motion stabilized platform of Doppler Lidar to place on floating platform is investigated. First, a counter-weight type motion stabilized platform is proposed, and its effectiveness of motion reduction on a spar-buoy type floating platform with tension-mooring is confirmed by numerical simulations and model tests. Furthermore, skyhook damper and spring controls are applied to the motion stabilized platform to optimize its motion, and it is confirmed by numerical simulations that its effectiveness of motion reduction is significantly increase. Finally, the motion stabilized platform is set on a discus-type floating platform whose motion is much larger and complicated than a spar-buoy type floating platform and its effectiveness is also confirmed by numerical simulations.

    DOI： 10.1115/omae2023-104685

  • Study on Wear Estimation and Wear Reduction of the Floating Offshore Wind Observation System "Buoy Lidar" Reviewed OA

    Yusuke Yamamoto, Masahiro Goto, Ryo Kodama, Tomoki Taniguchi, Toru Katayama

    Journal of the Japan Society of Naval Architects and Ocean Engineers   37   27 - 36   2023.06（ ISSN:1880-3717 ） （ eISSN:1881-1760 ）

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    Authorship：Last author   Publishing type：Research paper (scientific journal)  

    DOI： 10.2534/jjasnaoe.37.27

    Repository URL： http://hdl.handle.net/10466/0002001579

  • Study on Short-term Prediction of Roll in Beam Sea Invited Reviewed

    Toru Katayama, Mai Kankaku, Atsuo Maki, Kei Sugimoto, Yusuke Fukumoto

    2023.04

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    Authorship：Lead author,　Corresponding author   International / domestic magazine：International journal  

  • Study on Bilge Keel Component of Roll Damping for Non-Periodic Motion Invited Reviewed

    Jun Umeda, Toru Katayama, Hirotada Hashimoto, Burak Yıldız

    Contemporary Ideas on Ship Stability : From Dynamics to Criteria edited by Kostas J. Spyrou, Vadim L. Belenky, Toru Katayama, Igor Bačkalov, Alberto Francescuttο   2023.04

  • Influences of Gap Flow on Air Resistance Acting on a Large Container Ship Reviewed International coauthorship

    Van Trieu Nguyen, Minh Duc Le, Van Minh Nguyen, Toru Katayama, Yoshiho Ikeda

    Journal of Marine Science and Engineering   11 ( 1 )   160 - 160   2023.01（ eISSN:2077-1312 ）

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    Publishing type：Research paper (scientific journal)   International / domestic magazine：International journal  

    In terms of speed lost and fuel consumed, wind loads are considered one of the main factors for large ship design, especially for container ships. Alongside water resistance, air resistance in strong wind conditions has a significant impact on the fuel efficiency and performance of container ships with large box-type bodies. This paper reports the effects of wind loads acting on a 20,000 TEU container ship carrying large numbers of deck containers using a commercial CFD software program (ANSYS Fluent V14.5 with RANS equation). A 1/255.3 scale model was used in this study to reveal the air resistance on the container ship configuration. The aerodynamic formations of the complex vortices, pressure, velocity contours, and streamlines, as well as the air forces acting on the container ship, are presented and discussed. The pressure distributions show that the gap air flows increase the stagnation pressure at the face side and decrease the pressure on the backside of each container gap through separate eddies. The difference in pressures created in the gaps contribute to the air resistance acting on the ship. It is confirmed that the use of side covers of deck containers to close the gap flows between container blocks can significantly reduce the air resistance for wind directions in the range of 30 to 60 degrees.

    DOI： 10.3390/jmse11010160

  • Proposal for Motion Stabilized Platform to equip Doppler Lidar for Offshore Wind Observations and its Control Method

    Yamamoto Yusuke, Kinugasa Mizuki, Morita Mayo, Katayama Toru

    Journal of the Japan Society of Naval Architects and Ocean Engineers   36 ( 0 )   31 - 39   2022.12（ ISSN:18803717 ） （ eISSN:18811760 ）

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    Authorship：Last author,　Corresponding author   International / domestic magazine：Domestic journal  

    <p>It is necessary to obtain actual wind state at the sea area where offshore wind farm will be constructed to realize its profitability and safety. Our research group has been investigating methods to reduce motion of floating platform caused by wave, wind, current for offshore wind observations by Doppler Lidar, and has proposed a spar-buoy with ring-fin motion stabilizer. However, the spar-buoy is not small, therefore it requires high installation cost. As another method, in this study, a controlled rigid body swing as a motion stabilized platform to place on floating structure is investigated numerically. First, a single pendulum type motion stabilized platform on a spar-buoy type floating plat form with a tension-moored is proposed, and its motion mechanism is clarified. Based on the results, a counter-weight type motion stabilized platform is proposed, which is an improvement of the single pendulum type, and the effectiveness in reducing motion is confirmed. Furthermore, the counter-weight type motion stabilized platform is adjusted so that it has no restoring moment, and further motion reduction is confirmed by using skyhook spring. Finally, it is confirmed that the motion reduction effects are also sufficient when the motion stabilized platform is mounted on a discus-type floating platform.</p>

    DOI： 10.2534/jjasnaoe.36.31

  • Study on Scale Effects of Hydrodynamics around Prismatic Planing Surface by using CFD Reviewed

    ( 36 )   1 - 13   2022.12（ ISSN:1880-3717 ）

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  • Motion Performance of Miniaturized Spar-Buoy With Ring-Fin Motion Stabilizer for Wind Observations by Doppler Lidar and Development of Stabilized Platform to Mount the Doppler Lidar Reviewed

    Yusuke Yamamoto, Mizuki Kinugasa, Mayo Morita, Toru Katayama

    Volume 4: Ocean Space Utilization   4   2022.06（ ISBN:9780791885888 ）

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    Authorship：Last author,　Corresponding author   Publishing type：Research paper (international conference proceedings)   International / domestic magazine：International journal  

    Abstract

    In this paper, motion performance of a miniaturized spar-buoy with a ring-fin motion stabilizer comparing with the previous studied the same type spar-buoy is experimentally investigated and compared with the performance of the previous studied large size spar-buoy[2], and they are confirmed that its pitch amplitude increases at the same wave period or the same wave height, and its maximum pitch amplitude may not change much, moreover, the tendency is not related to the mooring system or water depth.

    Moreover, it is investigated to reduce its pitch amplitude further. By placing the Doppler Lidar on a rigid body swing as a motion stabilized platform and constructing an active control that keeps the Doppler Lidar upright using a reinforcement learning, the motion of the sensor itself is reduced and the accuracy of measurement is improved.

    Numerical simulations are conducted using the motion data of the spar-buoy in regular and irregular waves measured by scale model tests, and it is confirmed that it is possible to reduce the motion of the Doppler Lidar itself by adjusting the control gain of the motion stabilized platform by using a constant damping coefficient or the variable damping coefficients decided by the skyhook damper theory In order to reduce the motion further, an external force cancellation control using the motion of the spar-buoy in irregular waves simulated by the supervised machine learning is also applied.

    DOI： 10.1115/omae2022-78175

  • Motion Evaluation of Floating Point Absorber-type Wave Energy Converter by Kane's Equation Reviewed

    Taniguchi Tomoki, Fujiwara Toshifumi, Umeda Jun, Nimura Tadashi, Katayama Toru

    Journal of the Japan Society of Naval Architects and Ocean Engineers   35 ( 0 )   65 - 76   2022.06（ ISSN:18803717 ） （ eISSN:18811760 ）

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    Publishing type：Research paper (scientific journal)   International / domestic magazine：Domestic journal  

    <p>In this paper, we derive the equations of longitudinal motion for a floating point absorber type wave energy converter (FPAWEC) by Kane's equation. Since FPAWECs have a nonholonomic constraint, we selected Kane's equation which is based on the principle of virtual power. The time-domain motion equations of the FPAWEC with several control strategies were developed and its motion evaluations were conducted in regular and irregular waves. The motion evaluation results were reasonably consistent with the measured ones, both in regular and irregular waves. The dominant pitch motion in irregular waves was observed around pitch natural frequency. Using the derived equations, we investigated the pitch moment components and found that the pitch moment on the float had the largest contributions to pitching motion with the pitch natural frequency.</p>

    DOI： 10.2534/jjasnaoe.35.65

  • CFDによる柱状滑走体の流体力計算ーステップ付柱状滑走体と実船サイズの柱状滑走体ー

    片山徹, 山口航平, 大関昌平, 曽我匡統, 渡辺敏夫

    日本船舶海洋工学会講演論文集 雑誌   ( 33 )   491 - 494   2021.11

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    Kind of work：Joint Work   International / domestic magazine：Domestic journal  

  • 船外機付き滑走艇の加速発進シミュレーション

    片山徹, 絹笠瑞基, 河添修平, 南葉正浩

    日本船舶海洋工学会講演論文集 雑誌   ( 33 )   181 - 185   2021.11

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    Kind of work：Joint Work   International / domestic magazine：Domestic journal  

  • 横横揺れ減衰力造渦成分の回転中心高さと浅喫水影響－池田の方法の造渦成分推定式の訂正と改良－

    片山徹, 吉田尚史, 山本裕介, 柏木正, 池田良穂

    日本船舶海洋工学会講演論文集 雑誌   ( 33 )   187 - 190   2021.11

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    Authorship：Lead author,　Corresponding author   Kind of work：Joint Work   International / domestic magazine：Domestic journal  

  • 姿勢安定装置付きスパーブイの小型化による波浪中運動特性

    山本裕介, 片山徹, 橋本博公，後藤正洋

    日本船舶海洋工学会講演論文集 雑誌   ( 33 )   375 - 379   2021.11

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    Kind of work：Joint Work  

  • Effects of Design Parameter on Occurrence of Snap Load and Wear of Mooring Line for Spar-Buoy With Ring-Fin Motion Stabilizer for Shallow Sea Reviewed

    Yusuke Yamamoto, Taishi Morimoto, Toru Katayama, Masahiro Goto, Ryo Kodama

    Volume 5: Ocean Space Utilization   2021.06（ ISBN:9780791885154 ）

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    Authorship：Corresponding author   Publishing type：Research paper (international conference proceedings)  

    Abstract

    The purpose of this study is to propose an optimal design method of the spar-buoy with ring-fin motion stabilizer for shallow sea and its mooring system, in order to avoid the occurrence of snap load. The mechanism of occurrence of snap load is investigated by model tests, and design parameters for avoiding the occurrence of snap load are investigated. From the observation of model’s motion, it has been realized that the snap load is caused by the tension of mooring line to stop the buoy’s horizontal motion, which relaxes the mooring line. Moreover, it has been confirmed that the horizontal motion is caused by the horizontal forces acting on the center pipe and float of the buoy, which relates to the acceleration component of wave excitation forces.

    In this paper, the effects of changing of design of the buoy (: diameter of center pipe and float, size of stabilizer, density of the buoy, length of mooring line) on avoiding or reducing snap load are investigated by using a numerical simulation (OrcaFlexver.11.0b), and the wear amounts are also estimated by using an empirical method (Takeuchi et al., 2019). From the results, it is confirmed that changing the buoy’s motion mode by shortening mooring line is effective to avoiding the occurrence of snap load, and to reduce the wear amount of the mooring line.

    DOI： 10.1115/omae2021-62337

  • 並進動揺型波力発電装置を対象とした実時間最適制御法の水槽模型試験による検証 Reviewed

    谷口友基（学生）, 藤原敏文, 梅田 隼（学生）,二村 正, 片山 徹

    日本船舶海洋工学会論文集 雑誌   ( 33 )   247 - 256   2021.06

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    Kind of work：Joint Work  

  • Characteristics of Roll Damping of Pure Car Carrier and Liquefied Natural Gas Carrier and Applicability of Ikeda’s Method with some Modifications Reviewed

    Toru Katayama, Mai Kankaku, Burak Yildiz, Kei Sugimoto, Yusuke Fukumoto

    Proceedings of the 1st International Conference on the Stability and Safety of Ships and Ocean Vehicles (STAB&S2021) 雑誌   1 - 12   2021.06

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    Kind of work：Joint Work  

  • EFFECTS OF DESIGN PARAMETER ON OCCURRENCE OF SNAP LOAD AND WEAROF MOORING LINE FOR SPAR-BUOY WITH RING-FIN MOTION STABILIZER FOR SHALLOW SEA Reviewed

    Yusuke Yamamoto, Taishi Morimoto, Toru Katayama, Masahiro Goto, Ryo Kodama

    Proceedings of the ASME 2021 40th International Conference on Ocean, Offshore and Arctic Engineering (OMAE2021) 雑誌 ASME   1 - 12   2021.06

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    Kind of work：Joint Work  

  • 浅海域用姿勢安定装置付きスパーブイの潮流および波中定傾斜発生のメカニズムとその改善方法 Reviewed

    山本裕介（学生）, 片山 徹, 森本大嗣, 谷口友基（学生）, 橋本博公, 後藤正洋

    日本船舶海洋工学会論文集 雑誌   ( 33 )   231 - 246   2021.06

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    Kind of work：Joint Work  

  • Characteristics of Roll Damping of Pure Car Carrier and Liquefied Natural Gas Carrier and Applicability of Ikeda’s Method with some Modifications Reviewed

    Toru Katayama, Mai Kankaku, Burak Yildiz, Kei Sugimoto, Yusuke Fukumoto

    Proceedings of the 1st International Conference on the Stability and Safety of Ships and Ocean Vehicles,   2021.06

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  • Theoretical determination of asymmetric rolling amplitude in irregular beam seas Reviewed

    Atsuo Maki, Leo Dostal, Yuuki Maruyama, Masahiro Sakai, Toru Katayama, Kei Sugimoto, Yusuke Fukumoto, Naoya Umeda

    Journal of Marine Science and Technology 雑誌 Springer   1 - 12   2021.04

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    Kind of work：Joint Work  

  • Mechanism of Inclination of Spar-Buoy with Ring-Fin Motion Stabilizer in Shallow Sea Caused by Tidal Currents and Waves and Avoidance of the Inclination Reviewed

    Yamamoto Yusuke, Katayama Toru, Morimoto Taishi, Taniguchi Tomoki, Hashimoto Hirotada, Goto Masahiro

    Journal of the Japan Society of Naval Architects and Ocean Engineers   33   231 - 246   2021（ ISSN:1880-3717 ） （ eISSN:1881-1760 ）

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    <p>The main topics of this paper are the motion characteristics of a spar-buoy. Motion measurements for the spar-buoy with and without a ring-fin motion stabilizer in currents and waves were carried out at the circular water channel and the towing tank of Osaka Prefecture University, to investigate the characteristics of its motion. Motion amplitude of the spar-buoy with the stabilizer is much smaller than the spar-buoy without the stabilizer, however, the spar-buoy with the stabilizer causes the inclination that means a time average value of motion and the inclination becomes larger according to increase in wave height. On the other hand, from the results in currents, the inclination of the spar-buoy with the stabilizer is much smaller than the results of the spar-buoy without the stabilizer, however, it is found that there is clear possibility that it has multi-balanced-inclinations for higher current velocity than the designed current velocity. The mechanisms of these unexpected phenomena were investigated, and it is indicated that they can be avoided to optimize cross-section shape of the stabilizer to change its characteristics of hydrodynamics.</p>

    DOI： 10.2534/jjasnaoe.33.231

    CiNii Article

  • Validation of Real-Time Nonlinear Model Predictive Control on Point Absorber Type Wave Energy Converter by Tank Test Reviewed

    Taniguchi Tomoki, Fujiwara Toshifumi, Umeda Jun, Nimura Tadashi, Katayama Toru

    Journal of the Japan Society of Naval Architects and Ocean Engineers   33   247 - 256   2021（ ISSN:1880-3717 ） （ eISSN:1881-1760 ）

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    <p>Real-time implementation of a nonlinear model predictive control (NMPC) for a point absorber type wave energy converter (PAWEC) with a tubular air cored permanent magnet generator is experimentally validated through tank model tests. The control inputs of the NMPC were updated by the differential equation to trace the solution of an associated two-point boundary-value problem. Two conventional control strategies, the resistive load control and the approximate complex-conjugate control with considering the copper loss (ACL), and the NMPC were implemented to the PAWEC model. The floater heave motion, control force of the generator, and power generation characteristics were compared in these control strategies. The power generation performance of the NNPC was the same level of that of the ACL in regular and irregular waves. The sensitivities to the linear viscous damping estimation error and to the wave excitation force estimation error in the NMPC were experimentally evaluated by the tank model tests.</p>

    DOI： 10.2534/jjasnaoe.33.247

    CiNii Article

  • Theoretical determination of asymmetric rolling amplitude in irregular beam seas Reviewed

    Maki, A., Dostal, L., Maruyama, Y., Sakai, M., Katayama, T., Sugimoto, K., Fukumoto, Y., Umeda, N.

    Journal of Marine Science and Technology (Japan)   27 ( 1 )   40 - 51   2021（ ISSN:0948-4280 ） （ eISSN:1437-8213 ）

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    Publishing type：Research paper (scientific journal)  

    A methodology for predicting the probability density function of roll motion for irregular beam seas is developed in the author’s previous research. In this paper, two methods for the prediction of the probability density function (PDF) of the rolling amplitude are examined. One of these methods is an approach based on a non-Gaussian PDF with the use of the equivalent linearization and the moment method, which has been used by Maki in the field of naval architecture. In the framework of this method, the instantaneous joint PDF of the roll and roll rate can be calculated. Thereby, the transformation from the joint PDF to the PDF of the total energy H is necessary. In this paper, the transformation from the joint PDF of instantaneous roll and rate to the PDF of H was conducted. The other method is the energy-based stochastic averaging method, whereby the PDF of the total energy H is determined from which the roll amplitude is calculated. It is noteworthy that the proposed theory aims to predict the PDF of the amplitude of the vessel due to wind or flooding. For such conditions, the restoring curve (GZ curve) has asymmetricity. To take into account this asymmetricity, a new theory for the transform of the PDF of the total energy H to the PDFof amplitude is proposed. The obtained theoretical results show almost complete agreement, and both of the two theoretical methods i.e., the energy-based stochastic averaging method and the non-Gaussian PDF method with the use of the equivalent linearization and moment method, show equivalent prediction performance even in the asymmetric condition.

    DOI： 10.1007/s00773-021-00810-4

  • Development of an Onshore Bench Test System for a Wave Energy Converter and Verification of a Real-Time Optimal Control Reviewed

    Taniguchi Tomoki, Fujiwara Toshifumi, Umeda Jun, Nimura Tadashi, Katayama Toru

    Journal of the Japan Society of Naval Architects and Ocean Engineers   32 ( 32 )   99 - 108   2020.12（ ISSN:1880-3717 ）

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    <p>The onshore bench test system consisting of two linear shaft motors is produced to emulate the wave energy converter (WEC) motion in waves, control force, and power generation under different control strategies. Two conventional control strategies, the resistive load control (RL)and the approximate complex-conjugate control with considering the copper loss (ACL), and an optimal control strategy, that is, the nonlinear model predictive control (NMPC), were implemented to the onshore bench test system. The measured motion of the test system, control force, and power generation are good agreement with the calculated ones in the simulated regular waves conditions. In the simulated irregular waves conditions, the measured motion of the system and control force are reasonably consistent with the calculated ones. The NMPC is able to finish the optimal calculations less than 50 ms in the tested cases in this paper. It is confirmed from the onshore bench tests that the calculation iteration number of the NMPC increased as the control input was approaching to the input constraints.</p>

    DOI： 10.2534/jjasnaoe.32.99

    CiNii Article

    J-GLOBAL

  • 波力発電装置の陸上試験装置の開発と実時間最適制御法の検証 Reviewed

    谷口友基, 藤原敏文, 梅田隼, 二村正, 片山 徹

    日本船舶海洋工学会論文集 雑誌 日本船舶海洋工学会   ( 32 )   99 - 106   2020.11

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    Kind of work：Joint Work  

  • Motion Characteristics of a Spar-Buoy With Ring-Fin Motion Stabilizer in Deep Sea Reviewed

    Toru Katayama, Yusuke Yamamoto, Taishi Morimoto, Masahiro Goto

    Volume 5: Ocean Space Utilization   2020.08

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    Abstract

    The main topics of this paper is the investigation of motion characteristics of the spar-buoy with ring fin motion stabilizer, which is developed to use as a platform for wind observation with a doppler lidar in shallow sea, some mooring conditions to apply it for deep sea. Four different mooring conditions are applied the spar-buoy and it motion in a designed sever wave condition are measured in the towing tank of Osaka Prefecture University.

    The results show that the amplitude of pitching in deep sea is smaller than the results in shallow sea, even if the wave condition in deep sea are severer than that in shallow sea. From further investigation about the effects of four different mooring conditions on motion characteristics, it has that the center of pitching at four mooring conditions are almost same but the amplitude of pitching is smaller by changing the mooring point and the intermediate sinker position.

    DOI： 10.1115/omae2020-18595

  • 自動車運搬船と液化天然ガス運搬船の横揺れ減衰力特性と池田の方法の適用性について Reviewed

    片山徹，高崎義憲，足立俊哉，勘角真依，杉本圭，福元佑輔

    日本船舶海洋工学会論文集 雑誌 日本船舶海洋工学会   ( 31 )   83 - 92   2020.06

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    Kind of work：Joint Work  

  • Characteristics of Roll Damping of Pure Car Carrier and Liquefied Natural Gas Carrier and applicability of Ikeda's Method Reviewed

    Katayama Toru, Takasaki Yasunori, Adachi Toshiya, Kankaku Mai, Sugimoto Kei, Fukumoto Yusuke

    Journal of the Japan Society of Naval Architects and Ocean Engineers   31   83 - 92   2020（ ISSN:1880-3717 ）

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    <p>It is important for the safety of ship in waves to understand its roll characteristics at the design stage. However, it is not easy to estimate roll accurately, because the viscous effects on roll damping affect significantly roll near its resonance frequency. For that purpose, it is significant to estimate roll damping accurately. As one of prediction methods of the viscous effects, Ikeda's method is well-known. However, it is pointed out by Tanaka et al. (1981) that the method overestimates the roll damping when the method is applied to a ship with shallow draught. On the other hand, with the recent enlargement and specialization of merchant ship, its breadth has increased compared to the hull form at the time when Ikeda's method was developed, and its height of the center of gravity has increased relative to draft. Therefore, when Ikeda's method is applied to such hull form, there is a concern that the estimation accuracy will deteriorate.</p><p>In this study, the characteristics of roll damping for two hull types (PCC: Pure Car Carrier and LNGC: Liquefied Natural Gas Carrier) with shallower draft and higher center of gravity compared to the ships which existed when Ikeda's method was developed, are investigated experimentally. The measured results are compared with the results of Ikeda's method to confirm the estimation accuracy and its characteristics, and the results of investigating the difference of them are reported.</p>

    DOI： 10.2534/jjasnaoe.31.83

    CiNii Article

  • NUMERICAL AND EXPERIMENTAL CALCULATION OF ROLL AMPLITUDE EFFECT ON ROLL DAMPING Reviewed

    Burak Yıldız, Bekir Şener, Ahmet Yurtseven, Toru Katayama

    Shipbuilding 雑誌   ( 70 )   2019.11

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    Kind of work：Joint Work  

  • Effects of half Breadth to Draught ratio of Hull under Water Surface on Bilge-keel Roll Damping Component Reviewed

    Toru Katayama, Masaki Matsuoka, Toshiya Adachi, Kazuki Ikushima

    Ocean Engineering 雑誌   ( 188 )   2019.09

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    Kind of work：Joint Work  

  • Characteristics of Rolling with Drift in Regular Beam Sea for Small Hard-chine Craft at Rest Reviewed

    Toru Katayama, Mai Kankaku; Atsuo Maki; Mina Adachi, Nobuo Nishiyama

    Ocean Engineering 雑誌   ( 188 )   2019.09

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    Kind of work：Joint Work  

  • An Experimental Study on Characteristics of Rolling in Head Waves for a Vessel with Nonlinear GZ-curve Invited Reviewed

    Toru Katayama, Shugo Miyamoto, Hirotada Hashimoto, Yoshifumi Tai

    Contemporary Ideas on Ship Stability -Risk of Capsizing-, Fluid Mechanics and Its Applications   119   491 - 505   2019.01（ ISSN:0926-5112 ） （ ISBN:9783030005146 ） （ eISSN:2215-0056 ）

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    In this study, the characteristics of rolling in head waves for a vessel with strong nonlinear GZ-curve, which includes parametric rolling, are investigated. Rolling is measured for systematically changed wave length and height under the same forward speed, which is service speed in heavy weather. As a result, the range of Te/Tϕ (Te and Tϕ are encounter wave period and the roll natural period of the model) when oscillatory rolling occurs is wider than that of previous results by Taguchi et al. (Model Experiment on Parametric Rolling of a Post-Panamax Containership in Head Waves. Proceedings of the Ninth International Conference on Stability of Ships and Ocean Vehicles, 2006), and the range spreads out wide area of Te/Tϕ > 0.5. Especially, in the range of Te/Tϕ > 0.5, oscillatory rolling is caused by large wave height and roll amplitude becomes larger than that at Te/T = 0.5. It is supposed that the result is caused by change of roll natural period caused by nonlinear GZ-curve. In order to confirm it, numerical simulations are carried out for several variations of GZ-curve. Additionally, roll measurements in irregular waves with Pierson-Moskowitz spectrum are also carried out.

    DOI： 10.1007/978-3-030-00516-0_29

  • Some topics for estimation of bilge keel component of roll damping Invited Reviewed

    Katayama, T., Yoshioka, Y., Kakinoki, T., Miyamoto, S., Ikeda, Y.

    Fluid Mechanics and its Applications   119   131 - 150   2019（ ISSN:0926-5112 ）

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    Authorship：Lead author,　Corresponding author   Publishing type：Research paper (scientific journal)  

    In this paper, two topics of roll damping estimation are introduced. In these topics, bilge-keel component of roll damping is focused, because this component is generally most part of viscous roll damping. First topic is the bilge-keel component of roll damping under shallow draft and large amplitude roll motion, and an estimation method of the draft effects based on Ikeda’s method is proposed. Second topic is the bilge-keel component of roll damping under transitional and non-periodic rolling, an estimation method for time-domain simulation based on Ikeda’s method is introduced and its estimated results are compared with measured results of roll damping in irregular forced rolling.

    DOI： 10.1007/978-3-030-00516-0_8

  • Numerical and experimental calculation of roll amplitude effect on roll damping Reviewed OA

    Yıldız, B., Şener, B., Yurtseven, A., Katayama, T.

    Brodogradnja   70 ( 2 )   1 - 15   2019（ ISSN:0007-215X ） （ eISSN:1845-5859 ）

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    Roll motion is still a challenging problem in naval architecture and an adequate prediction of this physical phenomenon is important because of its undesirable effects such as capsizing. There are several methods using linear potential theory to predict roll motion, such as strip method, however, the accuracy of the calculated results lag behind the accuracy of other degrees of freedom due to viscosity. Viscosity have an important effect on roll damping, especially near resonance, and as it is known, it is not included in potential flow methods. Vortex shedding is the main physical phenomena in viscous damping of the roll motion and it affects the flow velocity around the bilge. This may lead to pressure increase or decrease on the hull. In the present study, roll damping of a forced rolling hull with bilge keels at different roll amplitudes was calculated numerically by using an Unsteady Reynolds-averaged Navier-Stokes (URANS) solver. For the purpose of validation, forced roll experiments were carried out and the results were plotted next to numerical results. The generated vortices around the hull and bilge keel were observed in the URANS calculations. In the case of large roll amplitude motion, the vortex shedding from the bilge keel interacts with the free surface and leads to decrease on roll damping.

    DOI： 10.21278/BROD70201

  • Effects of half breadth to draught ratio of hull under water surface on bilge-keel roll damping component Invited Reviewed

    Katayama, T., Matsuoka, M., Adachi, T., Ikushima, K.

    Ocean Engineering   188   2019（ ISSN:0029-8018 ）

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    Authorship：Lead author,　Corresponding author   Publishing type：Research paper (scientific journal)  

    Roll amplitudes of parametric roll in regular head waves are sometimes underestimated by motion calculations including Ikeda's roll damping prediction method, especially for the case of the large roll amplitude caused by high wave height. In this case, generally the ship has significant relative draught changing because of its heave and pitch. It may be said that the effects of the change in relative draught on roll damping is significant. However, in Ikeda's prediction method, the bilge-keel component which is the largest component of total roll damping does not take the effects of draught. As the effects of draught, there are at least two related significant effects on the bilge-keel roll damping component not fully considers for developing Ikeda's prediction method. They are the effects of underwater hull aspects (: half breadth to draught ratio) and the free surface effects. In this study, as a first attempt, the effects of draught on the bilge-keel component are investigated experimentally and numerically by using a 2-dimensional model. And a prediction model of the effects of draught on bilge-keel component to collect Ikeda's prediction method is proposed. Moreover, the calculated results by the proposed method are compared with some measured data including the effects of draught and its validity is confirmed.

    DOI： 10.1016/j.oceaneng.2019.106283

  • Characteristics of rolling with drift in regular beam sea for small hard-chine craft at rest Invited Reviewed

    Katayama, T., Kankaku, M., Maki, A., Adachi, M., Nishiyama, N.

    Ocean Engineering   188   2019（ ISSN:0029-8018 ）

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    Authorship：Lead author,　Corresponding author   Publishing type：Research paper (scientific journal)  

    The characteristics of rolling with drift in regular beam sea for a small hard-chine craft at rest is investigated experimentally, and modification of a strip method with Ikeda's roll damping prediction method for hard-chine boat (Ikeda et al., 1990) is proposed. From the comparison between calculated and measured RAO of rolling, it is confirmed that the calculation overestimates roll amplitude at the condition where wave encounter period is shorter than its roll natural period, especially. The reasons of overestimation are investigated and it is confirmed that the coupling viscous roll moment from swaying cannot be ignored for small hard-chine craft for shorter wave period than its roll natural period. Because the roll natural period is shorter than that of a conventional displacement type vessel and its resonant wavelength is short comparing with its breadth, therefore its swaying can't follow orbital motion of wave, then coupling viscous roll moment from swaying becomes significant. Moreover, as another reason of the overestimation, the estimation accuracy of wave exciting roll moment is investigated and it is recommended that the diffraction potential should be solved under strict satisfying the body boundary condition for short wave length (λ/B < 7.0).

    DOI： 10.1016/j.oceaneng.2019.106276

  • 小型高速旅客船の不規則向波中上下加速度に関する研究 Reviewed

    片山徹，天野遼介

    日本船舶海洋工学会論文集 雑誌 日本船舶海洋工学会   ( 23 )   2016.06

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    Kind of work：Joint Work  

  • 非定常横揺れ時の減衰力に関する研究―ビルジキール成分の履歴影響― Reviewed

    梅田隼，片山徹

    日本船舶海洋工学会論文集 雑誌 日本船舶海洋工学会   ( 23 )   2016.06

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    Kind of work：Joint Work  

  • Effect of vortex shedding and free surface interaction on roll damping due to large amplitude roll motion

    Burak Yıldız, Ahmet Yurtseven, Toru Katayama

    Proceedings of 15th International Ship Stability Workshop 雑誌   173 - 182   2016.06

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    Kind of work：Joint Work  

  • 航走する滑走艇の横揺れ減衰力鉛直方向揚力成分推定法に関する研究

    片山徹、澤江 智央

    日本船舶海洋工学会講演論文集 雑誌 日本船舶海洋工学会   ( 22 )   221 - 224   2016.05

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    Kind of work：Joint Work  

  • 小型ボートを用いた波浪計測法の検討

    片山徹，足達 美奈

    日本船舶海洋工学会講演論文集 雑誌 日本船舶海洋工学会   ( 22 )   69 - 72   2016.05

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    Kind of work：Joint Work  

  • URANS prediction of roll damping for a ship hull section at shallow draft Reviewed

    Burak Yıldız, Ferdi C¸ akıcı, Toru Katayama, Hu¨seyin Yılmaz

    Journal of Marine Science and Technology 雑誌 JASNAOE   ( 21 )   48 - 56   2016.02

    　More details

    Kind of work：Joint Work  

  • Development of a motion stabilizer for a Shallow Sea Area Spar Buoy in Wind, Tidal Current and Waves Reviewed

    Toru Katayama, Kazuki Hashimoto, Hiroshi Asou, Shigenori Komori

    Journal of Ocean and Wind Energy 雑誌 The International Society of Offshore and Polar Engineers   ( 2 )   182 - 192   2015.08

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    Kind of work：Joint Work  

  • A Study on the Characteristics of Self-propulsion Factors of Planing Craft with Outboard Engine Reviewed

    Toru Katayama, Yoshitaka Nishihara, Takuya Sato

    Transactions 2012 雑誌 THE SOCIETY OF NAVAL ARCHITECTS AND MARINE ENGINEERS   133 - 145   2012.12

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    Kind of work：Joint Work  

  • 小型模型を用いた高速滑走艇の自由航走試験システムの開発

    片山徹、橋本翼

    日本船舶海洋工学会講演論文集 雑誌 日本船舶海洋工学会   ( 15 )   187 - 190   2012.11

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    Kind of work：Joint Work  

  • Tank Tests to estimate onset of Dynamic Instabilities of High-Speed Planing Craft Reviewed

    Toru Katayama, Tomoki Taniguchi and Kazuya Habara

    Transactions 2011 雑誌 THE SOCIETY OF NAVAL ARCHITECTS AND MARINE ENGINEERS   106 - 121   2011.12

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    Kind of work：Joint Work  

  • A Study on Transverse Stability Loss of Planing craft at Super High Forward Speed Reviewed

    oru Katayama, Masashi Fujimoto and Yoshiho Ikeda

    International Shipbuilding Progress 雑誌   ( 54 )   365 - 377   2007.12

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    Kind of work：Joint Work  

  • Contemporary Ideas on Ship Stability Reviewed

    池田良穂,片山　徹

    　 著書 ELSEVIER SCIENCE Ltd, UK   2000.12

  • Contemporary Ideas on Ship Stability Reviewed

    池田良穂,奥村英晃,片山　徹

    　 著書 ELSEVIER SCIENCE Ltd, UK   2000.12

  • Mathematical, Physical & Engineering Sciences, Philosophical Transactions of The Royal Society, series A, vol.358, no.1771 Reviewed

    池田良穂,片山　徹

    　 著書 The Royal Institution of Naval Architects, UK   2000.12

▼display all

Books and Other Publications

  • Ship geometry and fundamentals of hydrostatics, Naval architecture and ocean engineering series ; 1

    Yoshiho Ikeda, Yoshitaka Furukawa, Toru Katayama, Tokihiro Katsui, Motohiko Murai, Satoru Yamaguchi（ Role： Joint author）

    成山堂書店  2018.08  （ ISBN:978-4-425-71436-0 ）

    　More details

    Responsible for pages：91-134  

  • 船舶海洋工学シリーズ①船舶算法と復原性

    池田良穂，古川芳孝，片山徹，勝井辰博，村井基彦，山口悟（ Role： Joint author）

    成山堂書店  2012.04  （ ISBN:978-4-425-71431-5 ）

    　More details

    Responsible for pages：91-133  

  • 船舶用CADシステム

    池田良穂，片山徹（ Role： Joint author）

    船と港編集室  2001 

    　More details

    Responsible for pages：1-118  

  • PC9800で使う小型船舶用CADシステム

    池田良穂，大石剛央，高田 浩，横溝幸治，片山 徹（ Role： Joint author）

    船と港編集室  1991.07  （ ISBN:978-4-8072-7053-2 ）

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    Responsible for pages：1-200  

MISC

  • 世界のハイテク船舶 : 風と太陽光を駆使してゼロエミッションをめざす International journal

    片山 徹

    Newton = ニュートン : graphic science magazine   44 ( 3 )   54 - 65   2024.03（ ISSN:0286-0651 ）

    　More details

  • Study on Effects of Propulsion on Hydrodynamic Forces acting on Hull and Lower-hull of Outboard Engine by using CFD

    ( 37 )   607 - 613   2023.11

    　More details

    Authorship：Lead author,　Corresponding author   Publishing type：Research paper, summary (national, other academic conference)  

  • Development of Free Running Model of High-speed Planing Craft with Outboard Engine

    ( 37 )   379 - 381   2023.11

    　More details

    Authorship：Lead author,　Corresponding author   Publishing type：Research paper, summary (national, other academic conference)  

  • Study on Characteristics of Thrust and Rudder force by Outboard Engine at Slow Forward Speed

    ( 37 )   373 - 378   2023.11

    　More details

    Authorship：Lead author   Publishing type：Research paper, summary (national, other academic conference)  

  • Study on Optimal Angle of Attack for Two Sails with Hull considering Aerodynamic Interaction

    ( 37 )   261 - 268   2023.11

    　More details

    Publishing type：Research paper, summary (national, other academic conference)  

  • Frequency Response Analysis of Wave Energy Converter Using Gaussian Process Regression

    ( 37 )   733 - 737   2023.11

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    Publishing type：Research paper, summary (national, other academic conference)  

  • Numerical Simulation Strategy of Full-scale Ship Roll Decay Motion

    Nguyen Thi Ha Phuong, Tomoki Taniguchi, Toru Katayama

    日本船舶海洋工学会講演論文集   ( 37 )   365 - 371   2023.11

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    Publishing type：Research paper, summary (national, other academic conference)  

  • Effects of the Bilge Keel Shape on Roll Damping

    Hasan Islam Copuroglu, Emre Peşman, Toru Katayama

    Proceedings of the 4th International Naval Architecture and Maritime Symposium (INT-NAM2023)   1 ( 1 )   857 - 867   2023.10

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    Publishing type：Research paper, summary (international conference)  

  • Experimental investigation of wave excitation roll moment in irregular beam waves Invited

    Toru Katayama, Yusuke Yamamoto, Atsuo Maki, Kei Sugimoto

    Proceedings of the 19th International Ship Stability Workshop   23 - 26   2023.09

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    Authorship：Lead author,　Corresponding author   Publishing type：Research paper, summary (international conference)  

  • Experimental and numerical investigation of viscous effects on parametric roll motion Invited

    Hasan Islam Copuroglu, Emre Peşman, Hiroki Morota, Naofumi Yoshida, Yusuke Yamamoto, Toru Katayama

    Proceedings of the 19th International Ship Stability Workshop   27 - 33   2023.09

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    Publishing type：Research paper, summary (international conference)  

  • Effects of half breadth to draught ratio on pressure distribution on hull caused by bilge-keels Invited

    Toru Katayama, Naofumi Yoshida

    Proceedings of the 19th International Ship Stability Workshop   15 - 21   2023.09

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    Authorship：Lead author,　Corresponding author   Publishing type：Research paper, summary (international conference)  

  • Review and Proposal of Design Wave Determination method

    Yusuke Yamamoto, Masahiro Goto, Ryo Kodama, Tomoki Taniguchi, Toru Katayama

    ( 36 )   373 - 374   2023.06

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    Publishing type：Research paper, summary (national, other academic conference)  

    DOI： 10.14856/conf.36.0_373

  • Model Test of Motion Stabilized Platform to Equip Doppler Lidar for Offshore Wind Observations and Effects of Frictional Torque around Shaft Bearing

    Toru Katayama, Daiki Morota, Yusuke bYamamoto, Mizuki Kinugasa

    ( 36 )   411 - 412   2023.06

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    Authorship：Lead author   Publishing type：Research paper, summary (national, other academic conference)  

    DOI： 10.14856/conf.36.0_411

  • Maneuvering Motion Simulation based on Deep Neural Network

    Mizuki bKinugasa, Seito Yamauchi, Hiroyuki Hatakenaka, Daisuke Terada, Toru Katayama

    Conference Proceedings The Japan Society of Naval Architects and Ocean Engineers   ( 36 )   337 - 338   2023.06

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    Publishing type：Research paper, summary (national, other academic conference)  

    DOI： 10.14856/conf.36.0_337

  • Applying LSTM to Predict Vertical Acceleration on Small High Speed Passenger Craft in Irregular Head Waves International journal

    ( 35 )   405 - 407   2022.11

    　More details

    Authorship：Last author,　Corresponding author   International / domestic magazine：International journal  

  • Proposal for Motion Stabilized Platform to Equip Doppler Lidar for Offshore Wind Observation and Its Control Method

    ( 35 )   597 - 600   2022.11

    　More details

    Authorship：Last author,　Corresponding author  

  • Characteristics of Maneuvering Hydrodynamic Forces Acting on Small Boat at Low Speed International journal

    ( 35 )   409 - 414   2022.11

    　More details

    Authorship：Last author,　Corresponding author   International / domestic magazine：Domestic journal  

  • Prediction of a Spike-Like Acceleration Acting on a Small High-Speed Craft in Stochastic Waves

    ( 35 )   405 - 407   2022.11

  • Effects of Height of Roll Center on Hull Pressure Distribution Due to Bilge-Keels

    ( 35 )   429 - 432   2022.11

    　More details

    Authorship：Lead author,　Corresponding author  

  • Calculation of Hydrodynamics Forces acting on Prismatic Planing Surface by CFD Reviewed

    Toru Katayama, Kohei Yamaguchi, Tatsuki Nanami, Jun Umeda, Shohei Ozeki, Masatsugu Soga, Toshio Watanabe

    15th International Symposium on Practical Design of Ships and Other Floating Structures PRADS 2022   2022.10

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    Authorship：Lead author,　Corresponding author  

  • Development of Acceleration Simulation from Rest of Planing Craft with Outboard Engine by using Time History Input Data of Engine Torque Reviewed

    Toru Katayama, Mizuki Kinugasa, Masahiro Nannba

    15th International Symposium on Practical Design of Ships and Other Floating Structures PRADS 2022   2022.10

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    Authorship：Lead author,　Corresponding author  

  • CFDによる船外機付き滑走艇の流体力特性に関する研究—Study on Characteristics of Hydrodynamic Forces of Planing Craft with Outboard Engine by using CFD

    片山 徹, 名波 辰樹, 大関 昌平, 曽我 匡統, 渡辺 敏夫

    日本船舶海洋工学会講演会論文集 Conference proceedings, the Japan Society of Naval Architects and Ocean Engineers   ( 34 )   315 - 319   2022.05（ ISSN:2185-1840 ）

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    Authorship：Lead author  

  • LSTMを用いた姿勢安定装置付きスパーブイの不規則波中動揺予測に関する検討—Study on Motion Prediction of Spar-Buoy with Ring Fin Motion Stabilizer in Irregular Wave using LSTM International journal

    絹笠 瑞基, 山本 裕介, 森田 万葉, 寺田 大介, 片山 徹

    日本船舶海洋工学会講演会論文集 Conference proceedings, the Japan Society of Naval Architects and Ocean Engineers   ( 34 )   411 - 414   2022.05（ ISSN:2185-1840 ）

    　More details

    Authorship：Last author,　Corresponding author   International / domestic magazine：Domestic journal  

  • 横揺れ減衰力ビルジキール成分の自由表面影響 : 池田による直圧力成分推定法の改良—Free Surface Effects on Bilge-keel Component of Roll Damping : Modification of Normal Force Component of Ikeda's method

    片山 徹, 吉田 尚史, 山本 裕介

    日本船舶海洋工学会講演会論文集 Conference proceedings, the Japan Society of Naval Architects and Ocean Engineers   ( 34 )   369 - 372   2022.05（ ISSN:2185-1840 ）

    　More details

    Authorship：Lead author  

  • 世界の最新船舶 : さらに進化をつづける,環境性能と輸送能力

    片山 徹

    Newton = ニュートン : graphic science magazine   42 ( 4 )   122 - 133   2022.04（ ISSN:0286-0651 ）

  • CFDによる柱状滑走体の流体力計算—Calculation of Hydrodynamics Forces Acting on Prismatic Planing Surface by CFD

    片山 徹, 山口 航平, 曽我 匡統, 渡辺 敏夫

    Suzuki technical review   48   91 - 100   2022.03

  • CFDによる柱状滑走体の流体力計算 : ステップ付柱状滑走体と実船サイズの柱状滑走体—Calculation of Hydrodynamics Forces Acting on Prismatic Planing Surface by CFD : Apply for Step Hull and Large Size Hull

    片山 徹, 山口 航平, 大関 昌平, 曽我 匡統, 渡辺 敏夫

    日本船舶海洋工学会講演会論文集 Conference proceedings, the Japan Society of Naval Architects and Ocean Engineers   ( 33 )   491 - 494   2021.11（ ISSN:2185-1840 ）

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    Authorship：Lead author  

    CiNii Article

  • 姿勢安定装置付きスパーブイの小型化による波浪中運動特性—Motion Characteristics of Spar-Buoy with Ring-Fin Motion Stabilizer in Waves by Miniaturization

    山本 裕介, 片山 徹, 橋本 博公, 後藤 正洋

    日本船舶海洋工学会講演会論文集 Conference proceedings, the Japan Society of Naval Architects and Ocean Engineers   ( 33 )   375 - 379   2021.11（ ISSN:2185-1840 ）

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    Authorship：Last author  

    CiNii Article

  • 船外機付き滑走艇の加速発進シミュレーション—Study on Acceleration Simulation of High-Speed Planing Craft with Outboard Engine from Rest

    片山 徹, 絹笠 瑞基, 河添 修平, 南葉 正浩

    日本船舶海洋工学会講演会論文集 Conference proceedings, the Japan Society of Naval Architects and Ocean Engineers   ( 33 )   181 - 185   2021.11（ ISSN:2185-1840 ）

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    Authorship：Lead author  

    CiNii Article

  • 横揺れ減衰力造渦成分の回転中心高さと浅喫水影響 : 池田の方法の造渦成分推定式の訂正と改良—Effects of Height of Center of Rolling and Shallow Draught on Eddy Making Component of Roll Damping : Correction and Modification of Eddy Making Component in Ikeda's Method

    片山 徹, 吉田 尚史, 山本 裕介, 柏木 正, 池田 良穂

    日本船舶海洋工学会講演会論文集 Conference proceedings, the Japan Society of Naval Architects and Ocean Engineers   ( 33 )   187 - 190   2021.11（ ISSN:2185-1840 ）

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    Authorship：Lead author  

    CiNii Article

  • Calculation of Hydrodynamics Forces Acting on Prismatic Planing Surface by CFD

    片山徹, 山口航平, 曽我匡統, 渡辺敏夫

    日本船舶海洋工学会講演会論文集(CD-ROM)   ( 32 )   255 - 262   2021（ ISSN:2185-1840 ）

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    Authorship：Lead author,　Corresponding author  

    CiNii Article

    J-GLOBAL

  • Characteristics of Stability and Roll in Beam Sea of Nobunaga’s Tekkosen

    片山徹, 絹笠瑞基, 山本裕介, 立川英弘, 藤井尚夫

    日本船舶海洋工学会講演会論文集(CD-ROM)   ( 32 )   513 - 519   2021（ ISSN:2185-1840 ）

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    Authorship：Lead author,　Corresponding author  

    CiNii Article

    J-GLOBAL

  • Study on Maneuvering Simulation of Small Planing Craft with Outboard Engine at High Speed

    片山徹, 畠中浩行, 山上航太, 前野仁

    日本船舶海洋工学会講演会論文集(CD-ROM)   ( 32 )   501 - 506   2021（ ISSN:2185-1840 ）

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    Authorship：Lead author,　Corresponding author  

    CiNii Article

    J-GLOBAL

  • Study on Short-Term Prediction of Rolling in Beam Sea

    片山徹, 勘角真依, 牧敦生, 杉本圭, 福元佑輔

    日本船舶海洋工学会講演会論文集(CD-ROM)   ( 32 )   507 - 511   2021（ ISSN:2185-1840 ）

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    Authorship：Lead author,　Corresponding author  

    CiNii Article

    J-GLOBAL

  • 浅海域用緊張係留式姿勢安定装置付きスパーブイの係留系に関する研究 : 運動シミュレーションを用いたスナップ荷重発生回避法の検討—Study on Mooring line for a Spar-Buoy with Ring-Fin Motion Stabilizer for Shallow Sea : Consideration on Snap Load Avoidance by using Motion Simulation

    片山 徹, 森本 大嗣, 山本 裕介, 後藤 正洋

    日本船舶海洋工学会講演会論文集 Conference proceedings, the Japan Society of Naval Architects and Ocean Engineers   ( 31 )   93 - 99   2020.11（ ISSN:2185-1840 ）

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  • Estimation Method of Bilge-keel Roll Damping Component Applicable for Wide-breadth and Shallow-draught Ship : Effects of Draught, Height of Roll Center and Free Surface on Normal Force on Bilge-keel

    Conference proceedings, the Japan Society of Naval Architects and Ocean Engineers   ( 30 )   417 - 423   2020.05（ ISSN:2185-1840 ）

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    Authorship：Lead author,　Corresponding author  

    CiNii Article

  • Motion characteristics of a spar-buoy with ring-fin motion stabilizer in deep sea

    Toru Katayama, Yusuke Yamamoto, Taishi Morimoto, Masahiro Goto

    Conference proceedings, the Japan Society of Naval Architects and Ocean Engineers   5 ( 29 )   153 - 156   2020（ ISSN:2185-1840 ） （ ISBN:9780791884362 ）

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    Authorship：Lead author,　Corresponding author  

    The main topics of this paper is the investigation of motion characteristics of the spar-buoy with ring fin motion stabilizer, which is developed to use as a platform for wind observation with a doppler lidar in shallow sea, some mooring conditions to apply it for deep sea. Four different mooring conditions are applied the spar-buoy and it motion in a designed sever wave condition are measured in the towing tank of Osaka Prefecture University. The results show that the amplitude of pitching in deep sea is smaller than the results in shallow sea, even if the wave condition in deep sea are severer than that in shallow sea. From further investigation about the effects of four different mooring conditions on motion characteristics, it has that the center of pitching at four mooring conditions are almost same but the amplitude of pitching is smaller by changing the mooring point and the intermediate sinker position.

    CiNii Article

  • Characteristics of Roll Damping of PCC and LNGC

    Conference proceedings, the Japan Society of Naval Architects and Ocean Engineers   ( 29 )   219 - 223   2019.11（ ISSN:2185-1840 ）

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    Authorship：Lead author,　Corresponding author  

    CiNii Article

  • Study on Mooring line for a Spar-Buoy with Ring-Fin Motion Stabilizer for Shallow Sea : Occurrence of Snap Load and its Mechanism

    Conference proceedings, the Japan Society of Naval Architects and Ocean Engineers   ( 29 )   157 - 162   2019.11（ ISSN:2185-1840 ）

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    Authorship：Lead author,　Corresponding author  

    CiNii Article

  • A perspective on theoretical estimation of stochastic nonlinear rolling OA International journal

    A. Maki, Y. Maruyama, N. Umeda, Y. Miino, T. Katayama, M. Sakai, T. Ueta

    Proceedings of the 17th International Ship Stability Workshop   39 - 46   2019.06

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  • Study on short-term prediction of roll in beam sea OA

    T. Katayama, M. Kankaku, A. Maki, K. Sugimoto, Y. Fukumoto

    Proceedings of the 17th International Ship Stability Workshop   303 - 308   2019.06

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    Authorship：Lead author,　Corresponding author  

  • Motion Characteristics of a Spar-Buoy with Ring-Fin Motion Stabilizer in Waves

    Conference proceedings, the Japan Society of Naval Architects and Ocean Engineers   ( 28 )   561 - 565   2019.06（ ISSN:2185-1840 ）

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    Authorship：Lead author,　Corresponding author  

    CiNii Article

▼display all

Presentations

  • Development of Ship Maneuvering Motion Simulation at Low Speed Using Machine Learning International coauthorship International conference

    Mizuki Kinugasa, Takefumi Higaki, Hitoshi Yoshioka, Daisuke Terada, Akihiko Matsud, Toru Katayama

    3rd International Congress on Ship and Marine Technology  2024.12  The Turkish Chamber of Naval Architects and Marine Engineers’ Publication Committee

  • Introduction of Research Activity for High-Speed Planing Craft Performance Evaluation at Osaka Metropolitan University Invited International conference

    Toru KATAYAMA

    3rd International Congress on Ship and Marine Technology  2024.12  The Turkish Chamber of Naval Architects and Marine Engineers’ Publication Committee

    　More details

    Venue：Trabzon, Turky  

    Other Link： https://www.gmoshipmar.org/

  • Experimental And Numerical Investigation of Effects of Forward Speed on Bilge-Keel Roll Damping of Roro Ship International coauthorship International conference

    Naofumi Yoshida, Emre Pesman, Hasan Islam Copuroglu, Tomoki Taniguchi and Toru Katayama

    3rd International Congress on Ship and Marine Technology  2024.12  The Turkish Chamber of Naval Architects and Marine Engineers’ Publication Committee

  • Investigation of the Prediction Horizon Length for Model Predictive Control of Point Absorber type Wave Energy Converter Domestic conference

    Md Shahidullah Kaiser, Takahito Iida, Tomoki Taniguchi, Toru Katayama, Ryo Yoshimura, Kazuki Irifune

    2024.11 

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  • DNNを用いた操縦運動モデルの構築 Domestic conference

    絹笠瑞基，檜垣岳史，吉岡舜，寺田大介，松田秋彦，片山徹

    日本船舶海洋工学会春季講演会  2024.11  日本船舶海洋工学会

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  • Study on Scale Effects on Ship Roll Motion International conference

    Nguyen Thi Ha Phuong, Tomoki Taniguchi, Toru Katayama

    the 2nd International Conference on the Stability and Safety of Ship and Ocean Vehicles  2024.09  STAB International Standing Committee

    　More details

    Venue：Wuxi, China  

    Other Link： https://www.shipstab.org/

  • Ikeda Method to Ikeda-Katayama Method-Bilge-keel component in Ship Roll Damping- Invited International conference

    Yoshiho Ikeda, Toru Katayama

    the 2nd International Conference on the Stability and Safety of Ship and Ocean Vehicles  2024.09  STAB International Standing Committee

    　More details

    Venue：Wuxi, China  

    Other Link： https://www.shipstab.org/

  • Effects of Bilge-keel Roll Damping on Parametric Rolling International coauthorship International conference

    Naofumi Yoshida, Emre Pesman, Hasan Islam Copuroglu, Tomoki Taniguchi, Yoshiho Ikeda, Toru Katayama

    the 2nd International Conference on the Stability and Safety of Ship and Ocean Vehicles  2024.09  STAB International Standing Committee

    　More details

    Venue：Wuxi, China  

    Other Link： https://www.shipstab.org/

  • 係留索の摩耗量推定についての研究 Domestic conference

    片山 徹，蓮沼 亮弥，山本 裕介，谷口 友基，福手 悠介

    日本船舶海洋工学会春季講演会  2024.06  日本船舶海洋工学会

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  • DEVELOPMENT OF LOW ENERGY CONSUMPTION MOTION STABILIZED PLATFORM FOR OFFSHORE WIND OBSERVATIONS FLOATING PLATFORM International conference

    Yusuke Yamamoto, Tomoki Taniguchi, Toru Katayama

    the ASME 2024 43nd International Conference on Ocean, Offshore and Arctic Engineering OMAE  2024.06  ASME

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    Venue：Singapore  

  • STUDY ON WEAR AND BREAKAGE ESTIMATIONS FOR SINGLE POINT MOORING CHAIN OF OFFSHORE FLOATING PLATFORM International conference

    Toru Katayama, Ryoya Hasunuma, Yusuke Yamamoto, Tomoki Taniguchi, Yusuke Fkute, Masahiro Goto

    the ASME 2024 43nd International Conference on Ocean, Offshore and Arctic Engineering OMAE  2024.06  ASME

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    Venue：Singapore  

  • CFD を用いた完全風力推進船の運動解析 Domestic conference

    安田 茜，谷口 友基，片山 徹

    日本船舶海洋工学会春季講演会  2024.06  日本船舶海洋工学会

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  • 規則縦波中パラメトリック横揺れに与えるビルジキールの効果 Domestic conference

    吉田 尚史，片山 徹

    日本船舶海洋工学会春季講演会  2024.06  日本船舶海洋工学会

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  • 不規則波の予測法について Domestic conference

    寺田 大介，絹笠 瑞基，片山 徹，平川 嘉昭

    日本船舶海洋工学会春季講演会  2024.06  日本船舶海洋工学会

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  • ガウス過程回帰モデルを用いた波力発電装置の周波数応答解析 Domestic conference

    梅田隼，谷口友基，片山徹

    日本船舶海洋工学会秋季講演会  2023.11  日本船舶海洋工学会

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  • 船外機付き小型ボートの低速走行時推力舵力特性に関する研究 Domestic conference

    片山徹，山内星徳，畠中浩行，小倉魁一，絹笠瑞基，谷口友基

    日本船舶海洋工学会秋季講演会  2023.11  日本船舶海洋工学会

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  • 船外機付き小型ボートの自由航走模型試験システムの開発 Domestic conference

    片山徹，小倉魁一，絹笠瑞基，谷口友基

    日本船舶海洋工学会秋季講演会  2023.11  日本船舶海洋工学会

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  • CFD を用いた船外機付き滑走艇の推進器作動による船体および船外機ロワーハルに作用する流体力への影響調査 Domestic conference

    片山徹，名波辰樹，谷口友基，大関昌平，渡辺敏夫

    日本船舶海洋工学会秋季講演会  2023.11  日本船舶海洋工学会

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  • Numerical Simulation Strategy of Full-scale Ship Roll Decay Motion Domestic conference

    Nguyen Thi Ha Phuong, Tomoki Taniguchi, Toru Katayama

    2023.11 

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  • 干渉影響を考慮した船体付2 翼帆の最適迎角に関する研究 Domestic conference

    安田茜，谷口友基，片山徹

    日本船舶海洋工学会秋季講演会  2023.11  日本船舶海洋工学会

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  • Effects of the Bilge Keel Shape on Roll Damping International coauthorship International conference

    Hasan Islam Copuroglu, Emre Peşman, Toru Katayama

    the 4th International Naval Architecture and Maritime Symposium (INT-NAM2023)  2023.10 

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    Venue：Istanbul, Turky  

  • Effects of half breadth to draught ratio on pressure distribution on hull caused by bilge-keels International conference

    Toru Katayama and Naofumi Yoshid

    the 19th International Ship Stability Workshop  2023.09 

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    Venue：Istanbul, Turkey  

  • Experimental investigation of wave excitation roll moment in irregular beam waves International conference

    Toru Katayama, Yusuke Yamamoto, Atsuo Maki, Kei Sugimoto

    the 19th International Ship Stability Workshop  2023.09 

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    Venue：Istanbul, Turkey  

  • Experimental and numerical investigation of viscous effects on parametric roll motion International conference

    Hasan Islam Copuroglu, Emre Peşman, Hiroki Morota, Naofumi Yoshida, Yusuke Yamamoto and Toru Katayama

    the 19th International Ship Stability Workshop  2023.09 

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    Venue：Istanbul, Turkey  

  • 設計波決定法の⾒直しと提案 Domestic conference

    ⼭本裕介, 後藤正洋, ⼩⽟亮, 谷⼝友基, 片山徹

    日本船舶海洋工学会春季講演会  2023.06  日本船舶海洋工学会

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    Venue：気仙沼  

    DOI： https://doi.org/10.14856/conf.36.0_373

  • Proposal for Motion Stabilized Platform for Offshore Wind Observations by Doppler Lidar and Its Validation International conference

    Yusuke Yamamoto, Mizuki Kinugasa, Hiroki Morota, Toru Katayama

    the ASME 2023 42nd International Conference on Ocean, Offshore and Arctic Engineering OMAE  2023.06  ASME

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    Venue：Melbourne, Australia  

  • Lstm Based Model Predictive Control of Motion Stabilized Platform to Equip Doppler Lidar for Offshore Wind Observations International conference

    Mizuki Kinugasa, Yusuke Yamamoto, Daisuke Terada, Toru Katayama

    the ASME 2023 42nd International Conference on Ocean, Offshore and Arctic Engineering OMAE  2023.06  ASME

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    Venue：Melbourne, Australia  

  • DNNを⽤いた⼩型ボートの低速操縦運動推定 Domestic conference

    絹笠瑞基, ⼭内星徳, 畠中浩⾏, 寺田⼤介, 片山徹

    日本船舶海洋工学会春季講演会  2023.06  日本船舶海洋工学会

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    Venue：気仙沼  

    DOI： https://doi.org/10.14856/conf.36.0_337

  • 洋上風況観測のためのドップラーライダー⽤動揺吸収台の⼩型模型実験と軸受け摩擦トルクの影響 Domestic conference

    片山徹, 諸田⼤輝, ⼭本裕介, 絹笠瑞基

    日本船舶海洋工学会春季講演会  2023.06  日本船舶海洋工学会

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    Venue：気仙沼  

    DOI： https://doi.org/10.14856/conf.36.0_411

  • 洋上風況観測のためのドップラーライダー用動揺吸収台とその制御方法の提案 Domestic conference

    山本裕介, 絹笠瑞基, 森田万葉, 片山徹

    日本船舶海洋工学会秋季講演会  2022.11  日本船舶海洋工学会

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    Presentation type：Oral presentation (general)  

  • ビルジキールによる船体表面圧力分布の回転中心高さ影響 Domestic conference

    片山徹, 吉田尚史

    日本船舶海洋工学会秋季講演会  2022.11  日本船舶海洋工学会

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    Presentation type：Oral presentation (general)  

  • 小型ボート低速走行時の操縦流体力特性について Domestic conference

    林克典, 畠中浩行, 片山徹

    日本船舶海洋工学会秋季講演会  2022.11  日本船舶海洋工学会

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    Presentation type：Oral presentation (general)  

  • LSTMを用いた小型高速旅客船の不規則向波中上下加速度の時系列予測 Domestic conference

    絹笠瑞基, 寺田大介, 片山徹

    日本船舶海洋工学会秋季講演会  2022.11  日本船舶海洋工学会

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    Presentation type：Oral presentation (general)  

  • 不規則波中で小型高速船に生じるスパイク状加速度の予測 Domestic conference

    寺田大介，絹笠瑞基，片山徹，平川嘉昭

    日本船舶海洋工学会秋季講演会  2022.11  日本船舶海洋工学会

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    Presentation type：Oral presentation (general)  

  • MOTION PERFORMANCE OF MINIATURIZED SPAR-BUOY WITH RING-FIN MOTION STABILIZER AND DEVELOPMENT OF STABILIZED PLATFORM TO EQUIP THE SPAR-BUOY WITH DOPPLER LIDAR International conference

    Yusuke Yamamoto, Mizuki Kinugasa, Mayo Morita, Toru Katayama

    the ASME 2022 41th International Conference on Ocean, Offshore and Arctic Engineering (OMAE2022)  2022.10 

  • Development of Acceleration Simulation from Rest of Planing Craft with Outboard Engine by using Time History Input Data of Engine Torque International conference

    Toru Katayama, Mizuki Kinugasa, Masahiro Nannba

    15th International Symposium on Practical Design of Ships and Other Floating Structures PRADS 2022  2022.10 

  • Calculation of Hydrodynamics Forces acting on Prismatic Planing Surface by CFD International conference

    Toru Katayama, Kohei Yamaguchi, Tatsuki Nanami, Jun Umeda, Shohei Ozeki, Masatsugu Soga, Toshio Watanabe

    15th International Symposium on Practical Design of Ships and Other Floating Structures PRADS 2022  2022.10 

  • Effects of Free Surface on Normal Force Component of Bilge-keel Roll Damping and Improvement of Ikeda’s method International conference

    Toru Katayama, Naofumi Yoshida, Yusuke Yamamoto

    the 18th International Ship Stability Workshop  2022.06 

  • 横揺れ減衰力ビルジキール成分の自由表面影響 Domestic conference

    片山徹，吉田尚史，山本裕介

    日本船舶海洋工学会春季講演会  2022.06  日本船舶海洋工学会

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    Presentation type：Oral presentation (general)  

  • 横揺れ減衰力ビルジキール成分の自由表面影響 Domestic conference

    片山徹，吉田尚史，山本裕介

    日本船舶海洋工学会春季講演会  2022.06  日本船舶海洋工学会

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    Presentation type：Oral presentation (general)  

  • LSTMを用いた姿勢安定装置付きスパーブイの不規則波中動揺予測に関する検討 Domestic conference

    絹笠瑞基，山本裕介，森田万葉，寺田大介，片山徹

    日本船舶海洋工学会春季講演会  2022.06  日本船舶海洋工学会

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    Presentation type：Oral presentation (general)  

  • CFDによる船外機付き滑走艇の流体力特性に関する研究 Domestic conference

    片山徹，名波辰樹，大関昌平，曽我匡統，渡辺敏夫

    日本船舶海洋工学会春季講演会  2022.06  日本船舶海洋工学会

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    Presentation type：Oral presentation (general)  

  • Correction of Eddy Making Component of Ikeda’s method and its Modification for Shallow Draught Effects International conference

    Toru Katayama, Naofumi Yoshida, Yusuke Yamamoto, Masashi Kashiwagi, Yoshiho Ikeda

    the 18th International Ship Stability Workshop  2022.06 

  • CFDによる柱状滑走体の流体力計算ーステップ付柱状滑走体と実船サイズの柱状滑走体ー Domestic conference

    片山徹, 山口航平, 大関昌平, 曽我匡統, 渡辺敏夫

    日本船舶海洋工学会秋季講演会  2021.11  日本船舶海洋工学会

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    Presentation type：Poster presentation  

  • 船外機付き滑走艇の加速発進シミュレーション Domestic conference

    片山徹, 絹笠瑞基, 河添修平, 南葉正浩

    日本船舶海洋工学会秋季講演会  2021.11  日本船舶海洋工学会

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    Presentation type：Poster presentation  

  • 横横揺れ減衰力造渦成分の回転中心高さと浅喫水影響－池田の方法の造渦成分推定式の訂正と改良－ Domestic conference

    片山徹, 吉田尚史, 山本裕介, 柏木正, 池田良穂

    日本船舶海洋工学会秋季講演会  2021.11  日本船舶海洋工学会

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    Presentation type：Poster presentation  

  • 姿勢安定装置付きスパーブイの小型化による波浪中運動特性 Domestic conference

    山本裕介, 片山徹, 橋本博公，後藤正洋

    日本船舶海洋工学会秋季講演会  2021.11  日本船舶海洋工学会

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    Presentation type：Poster presentation  

  • Characteristics of Roll Damping of Pure Car Carrier and Liquefied Natural Gas Carrier and Applicability of Ikeda’s Method with some Modifications International conference

    Toru Katayama, Mai Kankaku, Burak Yildiz, Kei Sugimoto, Yusuke Fukumoto

    the 1st International Conference on the Stability and Safety of Ships and Ocean Vehicles  2021.06 

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    Presentation type：Poster presentation  

  • EFFECTS OF DESIGN PARAMETER ON OCCURRENCE OF SNAP LOAD AND WEAROF MOORING LINE FOR SPAR-BUOY WITH RING-FIN MOTION STABILIZER FOR SHALLOW SEA International conference

    Yusuke Yamamoto, Taishi Morimoto, Toru Katayama, Masahiro Goto, Ryo Kodama

    the ASME 2021 40th International Conference on Ocean, Offshore and Arctic Engineering (OMAE2021)  2021.06  ASME

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  • 信長の鉄甲船の復原性と波浪中横揺れ特性 Domestic conference

    片山 徹, 絹笠瑞基, 山本裕介, 立川英弘, 藤井尚夫

    日本船舶海洋工学会春季講演会  2021.05  日本船舶海洋工学会

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    Presentation type：Poster presentation  

  • 横波中横揺れの短期予測に関する研究 Domestic conference

    片山 徹, 勘角真依, 牧 敦生, 杉本 圭, 福元佑輔

    日本船舶海洋工学会春季講演会  2021.05  日本船舶海洋工学会

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    Presentation type：Poster presentation  

  • 船外機付小型滑走艇の高速操縦運動シミュレーション法に関する研究 Domestic conference

    片山 徹, 畠中浩行, 山上航太, 前野 仁

    日本船舶海洋工学会春季講演会  2021.05  日本船舶海洋工学会

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    Presentation type：Poster presentation  

  • CFD による柱状滑走体の流体力計算 Domestic conference

    片山 徹, 山口航平, 曽我匡統, 渡辺敏夫

    日本船舶海洋工学会春季講演会  2021.05  日本船舶海洋工学会

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  • Calculation of Hydrodynamics Forces Acting on Prismatic Planing Surface by CFD

    片山徹, 山口航平, 曽我匡統, 渡辺敏夫

    日本船舶海洋工学会講演会論文集(CD-ROM)  2021 

  • Study on Maneuvering Simulation of Small Planing Craft with Outboard Engine at High Speed

    片山徹, 畠中浩行, 山上航太, 前野仁

    日本船舶海洋工学会講演会論文集(CD-ROM)  2021 

  • Study on Short-Term Prediction of Rolling in Beam Sea

    片山徹, 勘角真依, 牧敦生, 杉本圭, 福元佑輔

    日本船舶海洋工学会講演会論文集(CD-ROM)  2021 

  • Characteristics of Stability and Roll in Beam Sea of Nobunaga’s Tekkosen

    片山徹, 絹笠瑞基, 山本裕介, 立川英弘, 藤井尚夫

    日本船舶海洋工学会講演会論文集(CD-ROM)  2021 

  • Estimation Method of Bilge-keel Roll Damping Component Applicable for Wide-breadth and Shallow-draught Ship : Effects of Draught, Height of Roll Center and Free Surface on Normal Force on Bilge-keel

    Conference proceedings, the Japan Society of Naval Architects and Ocean Engineers  2020.05 

  • Motion characteristics of a spar-buoy with ring-fin motion stabilizer in deep sea

    Toru Katayama, Yusuke Yamamoto, Taishi Morimoto, Masahiro Goto

    Conference proceedings, the Japan Society of Naval Architects and Ocean Engineers  2020 

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    The main topics of this paper is the investigation of motion characteristics of the spar-buoy with ring fin motion stabilizer, which is developed to use as a platform for wind observation with a doppler lidar in shallow sea, some mooring conditions to apply it for deep sea. Four different mooring conditions are applied the spar-buoy and it motion in a designed sever wave condition are measured in the towing tank of Osaka Prefecture University. The results show that the amplitude of pitching in deep sea is smaller than the results in shallow sea, even if the wave condition in deep sea are severer than that in shallow sea. From further investigation about the effects of four different mooring conditions on motion characteristics, it has that the center of pitching at four mooring conditions are almost same but the amplitude of pitching is smaller by changing the mooring point and the intermediate sinker position.

  • Characteristics of Roll Damping of PCC and LNGC

    Conference proceedings, the Japan Society of Naval Architects and Ocean Engineers  2019.11 

  • Study on Mooring line for a Spar-Buoy with Ring-Fin Motion Stabilizer for Shallow Sea : Occurrence of Snap Load and its Mechanism

    Conference proceedings, the Japan Society of Naval Architects and Ocean Engineers  2019.11 

  • A perspective on theoretical estimation of stochastic nonlinear rolling

    A. Maki, Y. Maruyama, N. Umeda, Y. Miino, T. Katayama, M. Sakai, T. Ueta

    Proceedings of the 17th International Ship Stability Workshop  2019.06 

  • Motion Characteristics of a Spar-Buoy with Ring-Fin Motion Stabilizer in Waves

    2019.06 

  • Study on short-term prediction of roll in beam sea

    T. Katayama, M. Kankaku, A. Maki, K. Sugimoto, Y. Fukumoto

    Proceedings of the 17th International Ship Stability Workshop  2019.06 

  • Study on Roll with Drift in Regular Beam Waves for Small Hard Chine Craft at Rest

    2018.11 

  • Study on Roll Motion with Drift in Regular Beam Waves for Small Planing Craft at Dead Ship Condition

    2018.05 

  • Study of Roll Damping for Wide-breadth and Shallow-draught Ship : Modification of Inflow Velocity to Bilge-keel

    2018.05 

  • Experimental Study on Bilge-keel Component of Roll Damping for Wide and Shallow Draught Vessel

    2017.11 

  • Experimental Study on Longitudinal Motion of Planing Craft in Regular Head Waves

    2017.11 

  • NUMERICAL AND EXPERIMENTAL PREDICTION OF ROLL DAMPING FOR A HIGH-SPEED PLANING HULL

    B. Yildiz, E. Kahramanoglu, F. Cakici, T. Katayama

    Proceedings of 11th Symposium on High Speed Marine Vehicles (HSMV2017)  2017.10 

  • A Motion Estimation Method of High Speed Craft in Irregular Sea by using Onboard Monitoring Motion Time Series Data for Motion Control

    Daisuke Terada, Ryosuke Amano, Toru Katayama

    Proceedings of the 16th International Ship Stability Workshop  2017.06 

  • A Basic Study on Hull Form for Fatigue Reduction of Passengers on Planing Craft Running in Waves

    2017.05 

  • A Study on Roll Damping of Planing Craft

    2017.05 

  • A Study on Characteristics of Hydrodynamic Forces acting on Ring-Fin Motion Stabilizer

    2016.11 

  • Development of a Motion Simulation for a Spar Buoy with a Ring-Fin Motion Stabilizer

    Ryohei Fujimura, Yusuke Yamamoto, Toru Katayama, Hiroshi Asou, Shigenori Komori

    Proceedings of the 8th Asia-Pacific Workshop on Marine Hydrodynamics in Naval Architecture, Ocean Technology and Constructions, APHydro 2016  2016.09 

  • Effect of vortex shedding and free surface interaction on roll damping due to large amplitude roll motion

    Burak Yıldız, Ahmet Yurtseven, Toru Katayama

    Proceedings of 15th International Ship Stability Workshop  2016.06 

  • 2016S-GS1-1 A Study on Wave Measurement by using Small Boat

    Katayama Toru, Adachi Mina

    Conference Proceedings The Japan Society of Naval Architects and Ocean Engineers  2016  The Japan Society of Naval Architects and Ocean Engineers

  • 2016S-GS2-26 A Study on Vertical Lift Component of Roll Damping for Planing Craft with Forward Speed

    Katayama Toru, Sawae Tomohisa

    Conference Proceedings The Japan Society of Naval Architects and Ocean Engineers  2016  The Japan Society of Naval Architects and Ocean Engineers

  • 2015S-GS1-4 A Study on Bilge-keel Roll Damping Component for Non Periodic Motion

    Katayama Toru, Umeda Jun

    Conference Proceedings The Japan Society of Naval Architects and Ocean Engineers  2015  The Japan Society of Naval Architects and Ocean Engineers

  • 2015S-GS3-1 A Study on Motion Performance of an Inclined Spar Buoy for Shallow Sea Area

    Katayama Toru, Fujimura Ryohei, Aso Hiroshi, Komori Shigenori

    Conference Proceedings The Japan Society of Naval Architects and Ocean Engineers  2015  The Japan Society of Naval Architects and Ocean Engineers

  • A Study on Bilge-keel Roll Damping Component for shallow draft

    片山 徹, 梅田 隼, Yildiz Burak

    日本船舶海洋工学会講演会論文集  2014.11  日本船舶海洋工学会

  • Development of a motion stabilizer for a Shallow Sea Area Spar Buoy in Wind, Current and Waves

    2014.11 

  • Numerical Study on Drag Force acting on Flat Plate under Transitional and Irregular Oscillations

    Toru KATAYAMA, Jun UMEDA

    Proceedings of Second International Symposium on Naval Architecture and Maritime (INT-MAN2014)  2014.10 

  • A Study on Motion Reduction of a Spar Buoy for Shallow Sea Area in Waves and Current

    Toru Katayama, Kazuki Hashimoto, Hiroshi Asou, Shigenori Komori

    Proceedings of the 7th Asia-Pacific Workshop on Marine Hydrodynamics in Naval Architecture, Ocean Technology and Subsea Technology (APHydro2015)  2014.09 

  • The Inertia Contributions due to Floodwater Mass

    Gyeong Joong Lee, Arthur M. Reed, Frans Van Walree, Andrew Peters, Paola Gualeni, Toru Katayama, Wenyang Duan

    Proceedings of 14th International Ship Stability Workshop (ISSW2014)  2014.09 

  • Numerical Estimation and Validation of Shallow Draft Effect on Roll Damping

    Toru Katayama, Jun Umeda (J, Burak Yildiz (Turkey

    Proceedings of 14th International Ship Stability Workshop (ISSW2014)  2014.09 

  • Air Pressure Scale Effects during Damage Model Tests

    Gyeong Joong Lee, Frans van Walree, Arthur M. Reed, Andrew Peters, Paola Gualeni, Toru Katayama, WenYang Duan

    Proceedings of 14th International Ship Stability Workshop (ISSW2014)  2014.09 

  • A Study on Spinout Phenomena of Planing Craft in High Speed Turning with Radio Control Small Model

    Toru Katayama, Shun Ohashi

    Proceedings of 14th International Ship Stability Workshop (ISSW2014)  2014.09 

  • An Experimental Study on Spinout Phenomena in High Speed Turning of Small Craft

    片山 徹, 大橋 隼

    日本船舶海洋工学会講演会論文集  2014.05  日本船舶海洋工学会

  • An Experimental Study on Performance of High Speed Craft with Two Outboard Engines

    片山 徹, 片山 寛之

    日本船舶海洋工学会講演会論文集  2014.05  日本船舶海洋工学会

  • A Study on Motion Reduction of a Spar Buoy for Shallow Sea Area in Waves

    2014.05 

  • A Study on Performance Test Methods of Lifeboat against Tsunami and Flood

    片山 徹, 宮本 修吾, 梅田 隼

    日本船舶海洋工学会講演会論文集  2014.05  日本船舶海洋工学会

  • Characteristics of Longitudinal Motions of Planing Craft in Head Waves at Very High-Speed : Free Running Model Test

    片山 徹, 井上 智裕

    日本船舶海洋工学会講演会論文集  2013.11  日本船舶海洋工学会

  • A Study on Roll Damping Estimation for Non Periodic Motion

    Toru Katayama, Jun Umeda, Hirotada Hashimoto, Burak Yildiz

    Proceedings of 13rd International Ship Stability Workshop (ISSW2013)  2013.09 

  • A Study on Characteristics of Thrust and Steering Force of Pod Propulsor

    片山 徹, 梅田 隼

    日本船舶海洋工学会講演会論文集  2012.11  日本船舶海洋工学会

  • Development of Tank Test System for Performance Evaluation of High-Speed Planing Craft

    2012.11 

  • Development of Free Running Model Test System of Planing Craft using Small Model

    片山 徹, 橋本 翼

    日本船舶海洋工学会講演会論文集  2012.11  日本船舶海洋工学会

  • A Study on Simplified BHP Estimation Method for Planing Craft with Outboard Engine

    Hiroyuki Katayama, Toru Katayama

    Proceedings of the 6th Asia-Pacific Workshop on Marine Hydrodynamics (APHydro2012)  2012.09 

  • An Experimental Study on Characteristics of Rolling in Head Wave for a Vessel with Non-linear GZ-curve

    Toru Katayama, Shugo Miyamoto, Hirotada Hashimoto, Yoshifumi Tai

    Proceedings of 11th International Conference on Stability of Ships and Ocean Vehicles (STAB2012)  2012.09 

  • A Study on the Characteristics of Self-propulsion Factors of Planing Craft with Outboard Engine

    Toru Katayama, Yoshitaka Nishihara, Takuya Sato

    Proceedings of THE THIRD CHESAPEAKE POWER BOAT SYMPOSIUM (CD)  2012.06 

  • Development of Propulsive Performance Estimation Method for high-Speed Planing Craft with Outboard Engine

    Toru Katayama, Yoshitaka Nishihara, Takuya Sato

    PROCEEDINGS of 11th INTERNATIONAL MARINE DESIGN CONFERENCE (IMDC2012)  2012.06 

  • A Study on BHP Estimation Database for Planning Craft with Outboard Engine

    片山 徹, 片山 寛之, 西原 祥貴

    日本船舶海洋工学会講演会論文集  2012.05  日本船舶海洋工学会

  • 国際試験水槽委員会(ITTC)第26期活動報告(紹介)

    試験水槽委員会, 安東 潤, 安川 宏紀, 松本 光一郎, 永田 修一, 西尾 茂, 日野 孝則, 川北 千春, 池田 良穂, 片山 徹, 川村 隆文, 伊東 章雄

    日本船舶海洋工学会誌 KANRIN（咸臨）  2012  公益社団法人 日本船舶海洋工学会

  • An Experimental Study on Self-Propulsion Factor of High-Speed Planing Craft with Outboard Engine

    2011.11 

  • An Experimental Study on Characteristics of Rolling in Head Waves of a Ship with Nonlinear GZ-curve

    片山 徹, 宮本 修吾, 大橋 岳尋

    日本船舶海洋工学会講演会論文集  2011.11  日本船舶海洋工学会

  • A Study on Estimation Method of Bilge-keel component of Roll Damping for Time Domain Simulation

    片山 徹, 柿木 隆宏

    日本船舶海洋工学会講演会論文集  2011.11  日本船舶海洋工学会

  • An experimental study on instability of a super high-speed planing craft with outboard engine at straight running

    Toru Katayama, Kazuya Habara

    11th International Conference on Fast Sea Transportation, FAST 2011 - Proceedings  2011 

    　More details

    Recently, there are super high-speed planing craft, which can run at more than 100 km/h, owing to engine improvements and reductions in hull weight. At high-speed range, where most of hull is above the water surface, even if it runs in calm water, there are some kinds of peculiar unstable phenomena. For example, porpoising, corkscrew, transverse pure stability loss, directional instability, dutchroll, and so on. In this study, the stability of a craft with lower-hull of an outboard engine, whose real craft causes unstable phenomena at super-high forward speed regions, is investigated experimentally. Especially, the effects of lower-hull on the stability are focused. First, in order to investigate the roll stability, the measurement of roll restoring moment is carried out. The results show that there is rarely the possibility of occurrence of the instability except for the special running attitude caused by special loading condition, etc. Second, in order to investigate maneuverability, the measurements of maneuvering hydrodynamic forces are carried out and the indexes of maneuverability are obtained. The results show that straight line stability increases but yaw checking ability decreases by attaching lower-hull of outboard engine and there is the possibility of occurrence of directional instability. Finally, in order to investigate stability of straight running based on sway-roll-yaw coupling motion, the hydrodynamic forces of the motion equation are measured. As the results of investigation by Routh-Hurwitz stability criterion, for a hull with lower-hull, it is indicated that there is the possibility of roll-yaw coupling self-excitation motion if roll and yaw damping moments are small enough.

  • A Study on Intact Stability of a Wide Breadth and Shallow Draft Vessel

    田井 祥文, 片山 徹, 大橋 岳尋

    日本船舶海洋工学会講演会論文集  2010.11  日本船舶海洋工学会

  • A study on developing a next generation vessel: cruising performance of latest model of PCC in strong wind

    桃木 勉, 藤原 英雄, 片山 徹

    Conference proceedings, the Japan Society of Naval Architects and Ocean Engineers  2009.05  日本船舶海洋工学会

  • 2008K-G4-2 Study on Wind Pressure Characteristics of PCC

    Momoki Tsutomu, Onishi Seiki, Ikeda Yoshiho, Katayama Toru

    Conference Proceedings The Japan Society of Naval Architects and Ocean Engineers  2008  公益社団法人 日本船舶海洋工学会

  • OS-1 : マルチハル(オーガナイズドセッション報告,関西支部秋季講演会)

    池田 良穂, 片山 徹

    日本船舶海洋工学会誌 KANRIN（咸臨）  2008  公益社団法人 日本船舶海洋工学会

  • 2008S-G2-7 A Study on the Safety of Fishing Vessels in Operation at Extreme Rough Sea

    Katayama Toru, Kotaki Masanori, Tarao Yasuyoshi, Matsuda Akihiko

    Conference Proceedings The Japan Society of Naval Architects and Ocean Engineers  2008  公益社団法人 日本船舶海洋工学会

  • 2008S-G2-4 A Study on Viscous Effects of Roll Damping for Multi-hull High-speed Craft

    Katayama Toru, Taniguchi Tomoki

    Conference Proceedings The Japan Society of Naval Architects and Ocean Engineers  2008  公益社団法人 日本船舶海洋工学会

  • 2008S-G1-15 A Study on Characteristics of Hydrodynamics Forces acting on Planing Craft at Super High Forward Speed

    Katayama Toru, Shigematsu Kohei

    Conference Proceedings The Japan Society of Naval Architects and Ocean Engineers  2008  公益社団法人 日本船舶海洋工学会

  • 2008S-G1-14 Numerical Simulation to Estimate the Wetted Surface Area and Hull Bottom Pressure Distribution of a Planing Craft Running in Chine Dry Condition

    Katsui Tokihiro, Katayama Toru, Mochizuki Kenji

    Conference Proceedings The Japan Society of Naval Architects and Ocean Engineers  2008  公益社団法人 日本船舶海洋工学会

  • 2008K-SS-5 Attempt in Osaka Prefecture University to Marine Science & Technology Education for Schoolchildren : Steps of Youth Summer Seminar for 17 years

    Otsuka Koji, Katayama Toru

    Conference Proceedings The Japan Society of Naval Architects and Ocean Engineers  2008  公益社団法人 日本船舶海洋工学会

  • A Study on the Characteristics of Roll Damping of Multi-hull Vessels

    Toru Katayama, Masanori Kotaki, Yoshiho Ikeda

    Proc. of 9th Int'l Ship Stability Workshop  2007.08 

  • 2006年度家族会漁業体験第4弾「和歌浦で地引網&バーベキュー」報告(関西支部だより)

    片山 徹

    日本船舶海洋工学会誌 KANRIN（咸臨）  2007  公益社団法人 日本船舶海洋工学会

  • OS-1 : マルチハル船(オーガナイズドセッション報告,春季講演会)

    池田 良穂, 片山 徹

    日本船舶海洋工学会誌 KANRIN（咸臨）  2007  公益社団法人 日本船舶海洋工学会

  • 2007S-OS1-10 An Experimental Investigation on Roll Damping and Maneuvering Hydrodynamic Forces acting on Multi-hull

    Katayama Toru, Fujimoto Masashi, Kotaki Masanori

    Conference Proceedings The Japan Society of Naval Architects and Ocean Engineers  2007  公益社団法人 日本船舶海洋工学会

  • 2007S-G3-5 Development of Estimation Method of Running Performance for Planing Craft with Outboard Engine

    Katayama Toru, Kaneko Takeshi, Hori Yuji, Ikeda Yoshiho

    Conference Proceedings The Japan Society of Naval Architects and Ocean Engineers  2007  公益社団法人 日本船舶海洋工学会

  • 2007K-OS1-3 An Experimental Investigation on Roll Damping of Multi-hull Craft

    Katayama Toru, Kotaki Masanori, Taniguchi Tomoki

    Conference Proceedings The Japan Society of Naval Architects and Ocean Engineers  2007  公益社団法人 日本船舶海洋工学会

  • 2007K-G8-2 An Experimental Study on the Viscous Effects of Hydrodynamic Forces acting on Drifting Buoy

    Katayama Toru, Higuchi Yasuhide, Aso Hiroshi

    Conference Proceedings The Japan Society of Naval Architects and Ocean Engineers  2007  公益社団法人 日本船舶海洋工学会

  • 2007K-G7-2 Free Running Simulation of Practical Planing Ship

    Katsui Tokihiro, Katayama Toru

    Conference Proceedings The Japan Society of Naval Architects and Ocean Engineers  2007  公益社団法人 日本船舶海洋工学会

  • 2007E-OS2-8 Effects of Heave Motion on Heavy Parametric Rolling in Beam Waves

    Ikeda Yoshiho, Katayama Toru, Fujiwara Tomo

    Conference Proceedings The Japan Society of Naval Architects and Ocean Engineers  2007  公益社団法人 日本船舶海洋工学会

  • 2006A-G3-4 A Study on Vertical Acceleration acting on a Hydro-foil Craft Colliding with Floating Object and Landing in Water

    Oura Takuya, Katayama Toru, Ikeda Yoshiho

    Conference Proceedings The Japan Society of Naval Architects and Ocean Engineers  2006  公益社団法人 日本船舶海洋工学会

  • 2006W-G-23 Effects of Change in Running Attitude on Turning Motion of Planing Craft

    Kimoto Ryo, Katayama Toru, Iida Takashi, Ikeda Yoshiho

    Conference Proceedings The Japan Society of Naval Architects and Ocean Engineers  2006  公益社団法人 日本船舶海洋工学会

  • 2006K-OS1-3 An Experimental Study on Parametric Rolling of a Large Passenger Ship at Dead Ship Condition

    Ikeda Yoshiho, Katayama Toru, Fujiwara Tomo

    Conference Proceedings The Japan Society of Naval Architects and Ocean Engineers  2006  公益社団法人 日本船舶海洋工学会

  • 2006K-G2-1 A Study on Transverse Stability Loss of Planing craft at Super High Forward Speed

    Katayama Toru, Fujimoto Masashi, Ikeda Yoshiho

    Conference Proceedings The Japan Society of Naval Architects and Ocean Engineers  2006  公益社団法人 日本船舶海洋工学会

  • 2006A-OS11-4 Effects of Roll Damping on Parametric Rolling in Beam Sea

    Fujiwara Tomo, Katayama Toru, Ikeda Yoshiho

    Conference Proceedings The Japan Society of Naval Architects and Ocean Engineers  2006  公益社団法人 日本船舶海洋工学会

  • 損傷船舶の浸水時安全評価模型実験法に関する一考察

    片山 徹, 武内 祐二, 池田 良穂

    関西造船協会講演概要集 = Proceedings of the Kansai Society of Naval Architects  2005.05  公益社団法人日本船舶海洋工学会

  • 2005A-OS3-7 Experimental Identification of Large Parametric Rolling of a Large Passenger Ship

    Ikeda Yoshiho, Katayama Toru, Munif Abdul, Fujiwara Tomo

    Conference Proceedings The Japan Society of Naval Architects and Ocean Engineers  2005  公益社団法人 日本船舶海洋工学会

  • 高速三胴船の抵抗性能評価

    片山徹, 金子武史

    関西造船協会春季講演概要集  2005 

  • A Study on Model Test Method to Assess Safety of Damaged Ship with Flooding from Damaged Opening

    katayama toru, takeuchi yuji, ikeda yoshiho

    Proceedings of The Kansai Society of Naval Architects  2005  THE JAPAN SOCIETY OF NAVAL ARCHITECTS AND OCEAN ENGINEERS

    　More details

    In this study, the 2 models which have decks at water tight compaerment as Large Passenger Ship (110,000 gross tonnage) were developed, and the damaged ship&#039;s behaviors in intermediate stages of flooding were experimentally investigated. In some cases, large heel angle were measured for both models. However, the time to reach to the maximam heel angle for these ships have significantly differens from the safety point of view. It was confirmed that the difference is caused by the difference of flooding verocity from damaged opeing affected by the size of the opening and air compression in compertments.

  • Experimental and Numerical studies on Roll Motion of a Damaged Large Passenger Ship in Intermediate Stages of Flooding(Research Institute at Outside Organizations)

    2005 

  • 2005年度家族会 : 漁業体験第3弾 田尻漁港で漁業体験(関西支部だより)

    片山 徹

    日本船舶海洋工学会誌 KANRIN（咸臨）  2005  公益社団法人 日本船舶海洋工学会

  • 2005A-OS3-8 Numerical Prediction of Parametric Rolling of a Large Passenger Ship in Beam Seas

    Munif Abdul, Katayama Toru, Ikeda Yoshiho

    Conference Proceedings The Japan Society of Naval Architects and Ocean Engineers  2005  公益社団法人 日本船舶海洋工学会

  • 巨大客船の損傷時中間段階における挙動に関する実験的研究

    片山 徹, 武内 祐二, 池田 良穂

    関西造船協会講演概要集 = Proceedings of the Kansai Society of Naval Architects  2004.11  公益社団法人日本船舶海洋工学会

  • 滑走艇の斜航流体力に及ぼす航走姿勢影響について

    片山 徹, 木本 亮, 飯田 隆, 池田 良穂

    関西造船協会講演概要集 = Proceedings of the Kansai Society of Naval Architects  2004.11  公益社団法人日本船舶海洋工学会

  • Experimental and Numerical Studies on Roll Motion of a Damaged Large Passenger Ship in Intermediate Stages of Flooding

    Yoshiho Ikeda, Shigesuke Ishida, Toru Katayama, Yuji Takeuchi

    Proc. of 7th International Ship Stability Workshop  2004.11 

  • Experimental Studies on Transient Motion of a Damaged Large Passenger Ship

    Y.Ikeda, S.Ishida, T.Katayama, Y.Takeuchi

    Proc. of the 1st MARIN-NMRI Workshop  2004.10 

  • Effects of Running Attitude on Hydrodynamic Forces for Oblique Towed Planing Craft

    Ryou Kimoto, Toru Katayama, Yoshiho Ikeda

    Proc. of the 2nd Asia-Pacific Workshop on Marine Hydrodynamics (APHydro2004)  2004.06 

  • A Study on Performance of a Hydrofoil Assisted High-Speed Planing Mono-hull

    Koji Suzuki, Toru Katayama, Yoshiho Ikeda

    Proc. of the 2nd Asia-Pacific Workshop on Marine Hydrodynamics (APHydro2004)  2004 

  • Effects of Running Attitude on Hydrodynamic Forces for Obliquely Towed Planing Craft

    Katayama Toru, Kimoto Ryo, Iida Takashi, Ikeda Yoshiho

    Proceedings of The Kansai Society of Naval Architects  2004  THE JAPAN SOCIETY OF NAVAL ARCHITECTS AND OCEAN ENGINEERS

    　More details

    Measurements of running attitude (;rise, trim angle and heel angle) and 3-components of hydrodynamic forces (;drag force, sway force and yaw moment) are carried out for 1m-sized models by an obliquely towing test. The ratios of length to breadth of the models are L/B=6.0, 4.5 and 3.0, and their range of Fn is from 0.3 to 1.8. The results demonstrate that the heel angle is drastically changed by drift angle, Fn and L/B. The change in running attitude causes significant effects on yaw moment. It is also found that rise and trim angle are significantly affected by drift angle. The results suggest that it is necessary for predicting maneuverability to take the effects into consideration.

  • SIMULATION OF TIME-TO-FLOOD OF A DAMAGED LARGE PASSENGER SHIP

    Shigesuke ISHIDA, Yoshiho IKEDA, Toru KATAYAMA, Yuji TAKEUCHI

    Proceedings of the 1st MARIN-NMRI Workshop  2004 

  • Mechanism of porpoising instabilities for high-speed planing craft

    T Katayama

    PROCEEDINGS OF THE SIXTH (2004 ) ISOPE PACIFIC/ASIA OFFSHORE MECHANICS SYMPOSIUM  2004  INTERNATIONAL SOCIETY OFFSHORE& POLAR ENGINEERS

    　More details

    For these ten years, the author has investigated about unstable phenomena for high-speed planing craft experimentally and theoretically. In this paper, some of the unstable phenomena are introduced. The measured results of the motion of dynamic instabilities are shown and the characteristics of them are explained. The estimation method developed by the author to assess the possibility of their occurrence and some results are shown. And the mechanism of the instabilities is also explained in detail from the point of view based on motion equations.

  • インターセプター型制御装置を用いた高速船の向波中運動制御

    片山 徹, 森岡 康典, 池田 良穂

    関西造船協会講演概要集  2003.05  公益社団法人日本船舶海洋工学会

  • 船舶に働く横漂流抵抗に関する実験的研究

    中塚 智也, 片山 徹, 池田 良穂

    関西造船協会講演概要集 = Proceedings of the Kansai Society of Naval Architects  2003.05 

  • インターセプター型制御装置を用いた高速船の向波中運動制御

    片山 徹, 森岡 泰典, 池田 良穂

    関西造船協会講演概要集 = Proceedings of the Kansai Society of Naval Architects  2003.05 

  • A New Ship Motion Control System for High-Speed Craft

    Toru KATAYAMA, Koji SUZUKI and Yoshiho IKEDA

    Proc. of 7th INTERNATIONAL CONFERENCE ON FAST SEA TRANSPORTATION (FAST2003), Naples, ITALY  2003 

  • アメリカでの高速艇の性能に関する研究の情報交換と研究施設の見学(若手研究者海外派遣報告)

    片山 徹

    日本造船学会講演会論文集  2003  公益社団法人 日本船舶海洋工学会

  • Criteria of Bow-Diving Phenomena for Planing Craft

    Toru KATAYAMA, Kentarou TAMURA, Yoshiho IKEDA

    Proc. of 8th INTERNATIONAL CONFERENCE ON STABILITY OF SHIPS AND MARINE VEHICLES (STAB2003), Madrid, SPAIN  2003 

    　More details

    The purpose of this paper is to clarify the cause of Bow-Diving occurrence of planing craft. First, model experiments are carried out in order to reproduce Bow-Diving and it is confirmed that Bow-Diving occurs in calm water and in wave. From the experimental results, the relative position of the hull to the water surface at Bow-Diving occurrence is shown. Next, the hydrodynamic forces acting on the model are measured by fully captive model tests with wide range of attitudes including the running attitude at Bow-Diving occurrence to obtain the restoring forces acting on the model, and the characteristic of them are investigated. Consequently, it is shown that the restoring
    forces play an important role to Bow-Diving occurrence and a method of obtaining the criteria of Bow-Diving occurrence based on the restoring forces is proposed. Furthermore, the estimation
    methods of Bow-Diving occurrence are proposed.

  • Characteristics of Roll Damping with Drifting Motion for an Indonesian Fishing Vessel

    Baharuddin Ali, Toru KATAYAMA, Yoshiho IKEDA

    Proc. of 8th INTERNATIONAL CONFERENCE ON STABILITY OF SHIPS AND MARINE VEHICLES (STAB2003), Madrid, SPAIN  2003 

  • A New Ship Motion Control System for High-Speed Craft（jointly worked）

    Proc. of 7th INTERNATIONAL CONFERENCE ON FAST SEA TRANSPORTATION (FAST2003), Naples, ITALY  2003 

  • 3-13 滑走艇のバウダイビングに関する基礎的研究

    片山 徹, 田村 健太郎, 池田 良穂

    関西造船協会講演概要集  2002.11  公益社団法人日本船舶海洋工学会

  • Development of Resistance Test for High-Speed Planing Craft Using Small Models -Scale Effects on Drag Force-

    Toru KATAYAMA, Shigeru HAYASHITA, Yoshiho IKEDA, Kouji SUZUKI

    Proc. of Asia Pacific Workshop on Marine Hydrodynamics(AP Hydro2002)  2002.05 

  • (1) 超小型模型を用いた高速滑走艇の抵抗試験法

    林田 滋, 池田 良穂, 片山 徹, 鈴木 宏始

    Techno marine 日本造船学会誌  2002  公益社団法人 日本船舶海洋工学会

    　More details

    本研究は,従来の概念に挑戦して,全長0.5m以下の超小型模型を用いた高速艇の抵抗試験法を開発することを最終目標として,その第一歩として実現可能性の調査を行った。超小型模型を含む相似模型に対し,姿勢拘束模型の流体力計測を行い,揚力,トリムモーメントおよび抵抗係数に及ぼす尺度影響を実験的に明らかにし,流体力データに尺度影響補正を施した航走姿勢シミュレーションを行った。その結果,スケールの違う船体の航走姿勢および抵抗を比較的精度良く推定でき,超小型模型を用いた抵抗試験法の可能生が検証された。[graph]

  • A Steady on Bow-Diving Phenomena for Planing Craft

    Katayama Toru, Tamura Kentarou, Ikeda Yoshiho

    Proceedings of The Kansai Society of Naval Architects  2002  THE JAPAN SOCIETY OF NAVAL ARCHITECTS AND OCEAN ENGINEERS

    　More details

    In this research, at first, Bow-Diving phenomena of planing craft is measured in model test and the relative position between the hull and water surface at the time of Bow-Diving phenomena occurrence is investigated. The results show that the hull, which dropped the bow by a certain disturbance, begins to sink and Bow-Diving phenomena occurs. Next, the steady hydrodynamic forces due to the displacements of ship motions are measured, and the characteristics of the forces are investigated. Consequently, it became clear that the hydrodynamic forces, which return to the steady running attitude, do not act on the hull that dropped the bow greatly by a certain disturbance. Furthermore, the simplified estimation method that Bow-Diving phenomena occurs based on the forces is proposed.

  • Experimental Techniques to Assess Dynamic Instability of High-Speed Planing Craft -Non-zero Heel, Bow-Diving, Porpoising and Transverse Porpoising-

    Proc. of SIXTH INTERNATIONAL SHIP STABILITY WORKSHOP  2002 

  • Development of Resistance Test Using Small Model of High Speed Planing Craft:&mdash;Scale Effects on Drag Force&mdash;

    Katayama Toru, Hayashita Shigeru, Suzuki Kouji, Ikeda Yoshiho

    Proceedings of The Kansai Society of Naval Architects  2002  THE JAPAN SOCIETY OF NAVAL ARCHITECTS AND OCEAN ENGINEERS

    　More details

    In order to develop a resistance test method for high speed planing craft using a very small model, the scale effects on wetted surface area, frictional resistance and pressure forces acting on a small model are experimentally investigated using geometric similar prismatic planing surface models. Froude number and Reynolds number covered in the experiments are Fn=1.0&amp;sim;4.0 and Rn=5&amp;times;10&lt;SUP&gt;5&lt;/SUP&gt;&amp;sim;3&amp;times;10&lt;SUP&gt;6&lt;/SUP&gt;, respectively. Through the analysis of resistance components, it is found that a resistance component created by disappear of hydrostatic pressure on the transom due to high-speed, called transom pressure resistance in the paper, plays an important role in the resistance of a planing craft. The wetted surface area is confirmed to slightly decrease for a very small model at large trim angle, and to cause the reduction of the pressure force acting on the hull. The frictional resistance acting on a very small model can be predicted on the basis of the equivalent flat plate concept if appropriate prediction formulas, in which laminar and transient flow effects are taken into account, are used.

  • Development of Resistance Test for High-Speed Planing Craft Using Small Models -Scale Effects on Drag Force- (jointly worked)

    Proc. of Asia Pacific Workshop on Marine Hydrodynamics(AP Hydro2002)  2002 

  • An Experimental Study on Seakeeping Performance of Philippine Outrigger Craft (jointly worked)

    Proc. of Asia Pacific Workshop on Marine Hydrodynamics(AP Hydro2002)  2002 

  • An Experimental Study on Seakeeping Performance of Philippine Outrigger Craft

    Shigehiro Ritsuo, Kuroda Takako, Aguilar Glenn, Katayama Toru

    Proceedings of The Kansai Society of Naval Architects  2002  THE JAPAN SOCIETY OF NAVAL ARCHITECTS AND OCEAN ENGINEERS

    　More details

    The Core-University Scientific Corporation Program has started between Philippines and Japan from 1998. The project of fishing craft is conducted to improve the performance of Philippine outrigger craft. Most fishing craft of the Philippines are constructed in the double outrigger form with a main hull and floats at both sides. Generally, a float and its beam are made of bamboo. In this paper, the characteristics of ship motions are experimentally investigated to clarify dangerous sea conditions for the craft in waves. A computer program has been developed to calculate ship motions of the craft. The accuracy of this computer program is checked by measurement of ship motions in waves. Furthermore, results of the calculation are in good agreement with the measured ones. From these results, the outriggers increase heaving and pitching motions in head seas at the short wave length, although significantly decrease heaving and rolling motions in beam seas.

  • 2-14 滑走艇の斜航時横ポーポイジングに関する基礎的研究 (第1報) : 横ポーポイジングの発生と復原力特性

    片山 徹, 手嶋 晃, 池田 良穂

    関西造船協会講演概要集  2001  社団法人 日本船舶海洋工学会

  • Japanese Research Activities on Damage Stability of a Ship to Support International and Domestic Regulatory Works (jointly worked)

    Proc. of Euro-conference on Passenger Ship Design, Operation & Safety  2001 

  • Japanese Research Activities on Damage Stability of a Ship to Support International and Domestic Regulatory Works

    Yoshiho Ikeda, Toru Katayama

    Proc. of Euro-conference on Passenger Ship Design, Operation & Safety  2001 

  • 4-18 滑走艇の斜航時横ポーポイジングに関する基礎的研究 (第2報) : 横ポーポイジングのシミュレーション

    片山 徹, 手嶋 晃, 池田 良穂

    関西造船協会講演概要集  2001  社団法人 日本船舶海洋工学会

  • 4-17 高速滑走艇の波浪中運動特性に関する基礎的研究 : 前後揺れが上下揺れおよび縦揺れに及ぼす影響について

    片山 徹, 池田 良穂

    関西造船協会講演概要集  2001  社団法人 日本船舶海洋工学会

  • 1-3 トリムタブを用いた高速カーフェリーの縦揺れ制御に関する研究

    岡田 昌之, 池田 良穂, 片山 徹, 片山徹

    関西造船協会講演論文集  2000  公益社団法人 日本船舶海洋工学会

  • Roll Damping Prediction Method for a High-Speed Planing Craft

    Y. Ikeda and T. Katayama

    Proceedings of the 7th International Conference on Stability of Ship and Ocean Vehicles  2000 

  • Longitudinal Motion of a Super High-Speed Planing Craft in Regular Head Waves(jointly worked)

    Proc. of the 4th Osaka Colloquium on Seakeeping Performance of Ships  2000 

  • Longitudinal Motion of a Super High-Speed Planing Craft in Regular Head Waves

    T. Katayama, T. Hinami, Y. Ikeda

    Proc. of the 4th Osaka Colloquium on Seakeeping Performance of Ships  2000 

  • Characteristics of Hydrodynamic Forces acting on Rapidly Accelerated planing Craft from Rest

    T. Katayama, Y. Ikeda

    Proc. of the Fourth International Conf. on Hydrodynamics  2000 

  • 2-14 横波中を航走する船舶の横揺れに及ぼす左右揺れの連成影響と横揺れ減衰力特性

    黒田 貴子, 片山 徹, 重廣 律男, 池田 良穂, 池田良穂, 池田良穂

    関西造船協会講演論文集  2000  公益社団法人 日本船舶海洋工学会

  • 1-6 滑走艇の摩擦抵抗に関する一考察

    林田 滋, 手嶋 晃, 片山 徹, 池田 良穂

    関西造船協会講演論文集  2000  公益社団法人 日本船舶海洋工学会

  • 1-4 A Study on Stability of Damage Ships in Intermediate Stage of Flooding

    Ma Yongkang, KATAYAMA Toru, IKEDA Yoshiho

    Proceedings of The Kansai Society of Naval Architects  2000  公益社団法人 日本船舶海洋工学会

  • 1-11 PMM試験による滑走艇の操縦流体力の計測

    田嶋 慎一郎, 池田 良穂, 片山 徹, 奥村 英晃

    関西造船協会講演論文集  1999  公益社団法人 日本船舶海洋工学会

  • 2-4 超高速で航走する滑走艇の正面規則波中運動特性

    片山 徹, 日並 貴成, 池田 良穂

    関西造船協会講演論文集  1999  公益社団法人 日本船舶海洋工学会

  • 1-18 斜航する滑走艇の艇体に働く流体力の計測

    池田 良穂, 奥村 英晃, 新名 二郎, 片山 徹

    関西造船協会講演論文集  1998  公益社団法人 日本船舶海洋工学会

  • 高速滑走艇の縦不安定現象について

    片山徹,池田良穂,大塚耕司

    Proceedings of TECHNO-OCEAN’98  1998 

  • STABILITY OF A PLANING CRAFT IN TURNNING MOTION(jointly worked)

    Proceedings of the Fourth International Workshop on Theoretical Advances in Ship and Practical Impact  1998 

  • STABILITY OF A PLANING CRAFT IN TURNNING MOTION

    Y.IKEDA, H.OKUMURA and T.KATAYAMA

    Proceedings of the Fourth International Workshop on Theoretical Advances in Ship and Practical Impact  1998 

  • Hydrodynamic Forces Acting on Porpoising Craft at High-Speed(jointly worked)

    Proceedings of the Third International Conference on Hydrodynamics  1998 

  • Hydrodynamic Forces Acting on Porpoising Craft at High-Speed

    T.KATAYAMA, Y.IKEDA

    Proceedings of the Third International Conference on Hydrodynamics  1998 

  • 2-2 高速滑走艇の縦不安定現象に関する基礎的研究 (第3報)

    片山 徹, 池田 良穂

    関西造船協会講演論文集  1997  公益社団法人 日本船舶海洋工学会

  • STABILITY OF HIGH SPEED CRAFT(jointly worked)

    Proceedings of the Third International Workshop on Theoretical Advances in Ship and Practical Impact  1997 

  • STABILITY OF HIGH SPEED CRAFT

    Y.IKEDA, T.KATAYAMA

    Proceedings of the Third International Workshop on Theoretical Advances in Ship and Practical Impact  1997 

  • 6-24 高速滑走艇の横揺れおよび上下揺れ減衰力の揚力成分の一推定法

    池田 良穂, 片山 徹, 田嶋 慎一郎

    関西造船協会講演論文集  1997  公益社団法人 日本船舶海洋工学会

  • 2-3 高速滑走艇の縦不安定現象に関する基礎的研究 (第2報)

    片山 徹, 池田 良穂, 大塚 耕司

    関西造船協会講演論文集  1996  公益社団法人 日本船舶海洋工学会

  • A Study on Transverse Instability of Planing Craft at High Speed in Calm Water

    Proceedings of the Third Korea-Japan Joint Workshop on Ship and Marine Hydrodynamics  1996 

  • 2-8 高速滑走艇の縦不安定現象に関する基礎的研究 (第1報)

    片山 徹, 池田 良穂

    関西造船協会講演論文集  1996  公益社団法人 日本船舶海洋工学会

  • 2-7 高速艇の性能試験に関する研究 (第2報) : 超高速滑走艇シリーズ模型に働く流体力の計測

    池田 良穂, 西田 玄, 片山 徹, 山口 義則, 新名 二郎, 大島 健

    関西造船協会講演論文集  1996  公益社団法人 日本船舶海洋工学会

  • 2-5 高速滑走艇の縦揺れに起因する不安定横揺れに関する研究

    片山 徹, 池田 良穂

    関西造船協会講演論文集  1995  公益社団法人 日本船舶海洋工学会

  • 1-16 高速艇の性能試験に関する研究(第一報) : 高速曳航試験システムの開発

    池田 良穂, 片山 徹, 山下 保己, 大塚 耕司, 前田 孝雄

    関西造船協会講演論文集  1994  公益社団法人 日本船舶海洋工学会

  • Roll Motion Characteristics of High Speed Slender Vessels

    Y.IKEDA and T.KATAYAMA

    Proceedings of the Fifth International Conference on Stability Ship and Ocean Vehicles  1994 

  • Simulation of Running Attitude and Resistance of a High-Speed Craft Using Database of Hydradynamic Forces Obtanied by Fully Captive Model Experiment

    Y.IKEDA, K.YOKOMIZO, J.HAMASAKI, N.UMEDA and T.KATAYAMA

    Proceedings of the Second International Conference on Fast Sea Transportation  1993 

  • Simulation of Running Attitude and Resistance of a High-Speed Craft Using Database of Hydradynamic Forces Obtanied by Fully Captive Model Experiment(jointly worked)

    Proceedings of the Second International Conference on Fast Sea Transportation  1993 

▼display all

Works

  • 損傷時復原性計算プログラム

    2009

    　More details

    Work type：Software  

  • 小型船舶用浸水時復原性計算プログラム

    2000

    　More details

    Work type：Software  

  • 小型船舶用CADシステム

    1991.07

    　More details

    Work type：Software  

  • 横揺れ減衰力計算プログラム（池田らの方法）

    　More details

    Work type：Software  

  • 水槽試験データを用いた滑走艇の加速発進シミュレーション

    　More details

    Work type：Software  

  • 水槽試験データを用いた滑走艇の航走姿勢および抵抗シミュレーション

    　More details

    Work type：Software  

  • 水槽試験データを用いた滑走艇の操縦運動シミュレーション

    　More details

    Work type：Software  

▼display all

Industrial Property Rights

  • 多胴船の船体構造

    　More details

    property_type：Patent 

    Application no：特願2022 018529 

  • 推進力発生用タービン

    柴田政明, 尾崎雅洋, 片山徹

    　More details

    property_type：Patent 

    Application no：特願2019-174220号 

    Announcement no：特開2021-49874 

Collaborative research (seeds) keywords

  • 水中および水上利用機器の性能（流体力学的性能、運動性能、操作性能）評価法の開発

  • 船舶の損傷時および非損傷時の安全性・復原性に関する研究

  • 船舶・海洋構造物等に働く流体力の実験的評価

  • 様々な浮体・係留浮体の波浪中運動性能（耐航性）に関する研究

  • 高速艇の性能評価（抵抗・推進、耐航性、操縦性、安全性・復原性および高速航走時安定性）に関する研究

Outline of collaborative research (seeds)

  • 曳航水槽および海流水槽を用いた各種水槽試験法の開発

    　More details

    水槽を利用した，水にかかわる機器の性能評価試験および解析法の開発

  • 海洋利用機器の流体力学的性能および運動性能に関する研究

    　More details

    海洋レジャー、スポーツ機器等の水面または水中で利用するものの性能評価

  • 船舶の復原性・安全性に関する研究

    　More details

    損傷時および非損傷の船舶の復原性・安全性に関する研究

  • 海洋開発機器（浮体および係留浮体）の風浪中運動性能（耐航性能）に関する研究

    　More details

    海洋構造物の応答（運動）の実験的な評価

  • 高速艇（小型レジャーボート、小型漁船、高速旅客船など）の性能に関する研究

    　More details

    各種高速船の性能試験および性能評価

Grant-in-Aid for Scientific Research

  • 単胴型作業員輸送船(CTV)の横揺れを低減するアクティブ・アウトリガーに関する研究

    Grant-in-Aid for Scientific Research(B)  2027

  • 単胴型作業員輸送船(CTV)の横揺れを低減するアクティブ・アウトリガーに関する研究

    Grant-in-Aid for Scientific Research(B)  2026

  • 洋上施設に安全に移乗できる縦揺れ制御システムに関する研究

    Grant-in-Aid for Scientific Research(B)  2026

  • 単胴型作業員輸送船(CTV)の横揺れを低減するアクティブ・アウトリガーに関する研究

    Grant-in-Aid for Scientific Research(B)  2025

  • 洋上施設に安全に移乗できる縦揺れ制御システムに関する研究

    Grant-in-Aid for Scientific Research(B)  2025

  • 洋上施設に安全に移乗できる縦揺れ制御システムに関する研究

    Grant-in-Aid for Scientific Research(B)  2024

  • 横揺れ減衰力推定法（池田の方法）の改良と横揺れの長期予測法の構築

    2023

  • データ同化と学習理論による小型高速船の実時間運動予測

    2023

  • 横揺れ減衰力推定法（池田の方法）の改良と横揺れの長期予測法の構築

    Grant-in-Aid for Scientific Research(C)  2022

  • データ同化と学習理論による小型高速船の実時間運動予測

    Grant-in-Aid for Scientific Research(B)  2022

  • 横揺れ減衰力推定法（池田の方法）の改良と横揺れの長期予測法の構築

    2021

  • データ同化と学習理論による小型高速船の実時間運動予測

    2021

  • 姿勢安定化プラットフォームを備えた、自律型小型無人艇の研究開発

    2020

  • データ同化と学習理論による小型高速船の実時間運動予測

    2020

  • ラジオコントロール模型を用いた小型ボートの安全性評価法の開発

    2014

  • ラジオコントロール模型を用いた小型ボートの安全性評価法の開発

    2013

  • 着床式洋上風力発電事業のための高所風況観測用低動揺ブイ式プラットフォームの開発

    2013

▼display all

Joint research

  • 計測誤差を１／5以下にできる洋上風況観測浮体ブイ向け低動揺プラットフォーム開発

    株式会社リーデッジテクノロジー  新エネルギー等のシーズ発掘・事業化に向けた技術研究開発事業  2023

Other subsidies, etc.

  • 水で飽和している堆積土層の計測技術開発

    公益財団法人中部科学技術センター  Go-Tech事業  2023

  • 水で飽和している堆積土層の計測技術開発

    公益財団法人中部科学技術センター  成長型中小企業等研究開発支援事業（Go-Tech事業）  2023

  • 水で飽和している堆積土層の計測技術開発

    公益財団法人中部科学技術センター  Go-Tech事業  2022

  • 耐火型フリーフォール救命艇に関する強度分析・評価

    株式会社信貴造船所  2015

  • 耐火型フリーフォール救命艇に関する強度分析・評価

    株式会社信貴造船所  2014

Acceptance of Researcher

  • 2023  Number of researchers：1

Charge of on-campus class subject

  • 浮体運動学

    2024   Weekly class   Undergraduate

  • 浮体静力学

    2024   Weekly class   Undergraduate

  • 海洋システム工学概論

    2024   Weekly class   Undergraduate

  • 海洋システム機械工作実習

    2024   Weekly class   Undergraduate

  • 海洋システム工学特論

    2024   Weekly class   Graduate school

  • 船舶流体力学特論

    2024   Weekly class   Graduate school

  • 航空宇宙海洋系特別研究第1

    2024   Intensive lecture   Graduate school

  • 航空宇宙海洋系特別演習第1

    2024   Intensive lecture   Graduate school

  • 航空宇宙海洋系特別演習

    2024   Intensive lecture   Graduate school

  • 工学研究の最先端

    2024   Intensive lecture   Graduate school

  • 海洋輸送工学特別講義

    2024   Weekly class   Graduate school

  • 海洋資源エネルギー工学1

    2024   Weekly class   Undergraduate

  • 船舶流体力学

    2024   Weekly class   Undergraduate

  • 海洋システム工学科学技術英語

    2024   Weekly class   Undergraduate

  • 船舶海洋工学プロジェクト1

    2024   Weekly class   Undergraduate

  • 海洋システム工学総合演習

    2024   Weekly class   Undergraduate

  • 海洋輸送工学特論

    2024   Weekly class   Graduate school

  • 航空宇宙海洋系特別研究第2

    2024   Intensive lecture   Graduate school

  • 航空宇宙海洋系特別演習第2

    2024   Intensive lecture   Graduate school

  • 航空宇宙海洋系特別研究

    2024   Intensive lecture   Graduate school

  • 浮体静力学

    2023   Weekly class   Undergraduate

  • 海洋システム工学概論

    2023   Weekly class   Undergraduate

  • 航空宇宙海洋系特別演習

    2023   Intensive lecture   Graduate school

  • 海洋システム工学特論

    2023   Weekly class   Graduate school

  • 船舶流体力学特論

    2023   Weekly class   Graduate school

  • 航空宇宙海洋系特別研究第1

    2023   Intensive lecture   Graduate school

  • 航空宇宙海洋系特別演習第1

    2023   Intensive lecture   Graduate school

  • 海洋輸送工学特別講義

    2023   Weekly class   Graduate school

  • 海洋システム工学科学技術英語

    2023   Weekly class   Undergraduate

  • 浮体運動学

    2023   Weekly class   Undergraduate

  • 船舶海洋工学プロジェクト1

    2023   Weekly class   Undergraduate

  • 船舶流体力学

    2023   Weekly class   Undergraduate

  • 海洋システム工学総合演習

    2023   Weekly class   Undergraduate

  • 航空宇宙海洋系特別研究

    2023   Intensive lecture   Graduate school

  • 海洋輸送工学特論

    2023   Weekly class   Graduate school

  • 航空宇宙海洋系特別研究第2

    2023   Intensive lecture   Graduate school

  • 航空宇宙海洋系特別演習第2

    2023   Intensive lecture   Graduate school

  • 航空宇宙海洋系特別演習第1

    2022   Intensive lecture   Graduate school

  • 海洋システム工学特論

    2022   Weekly class   Graduate school

  • 船舶流体力学特論

    2022   Weekly class   Graduate school

  • 工学倫理

    2022   Weekly class   Undergraduate

  • 海洋輸送工学特別講義

    2022   Weekly class   Graduate school

  • 初年次ゼミナール

    2022   Weekly class   Undergraduate

  • 航空宇宙海洋系特別演習

    2022   Intensive lecture   Graduate school

  • 浮体運動学

    2022   Weekly class   Undergraduate

  • 航空宇宙海洋系特別研究 （海洋システム工学分野）

    2022   Intensive lecture   Graduate school

  • 海洋輸送工学特論 （海洋システム工学分野）

    2022   Weekly class   Graduate school

  • 航空宇宙海洋系特別演習第2 （海洋システム工学分野）

    2022   Intensive lecture   Graduate school

  • 海洋システム工学概論

    2022   Weekly class   Undergraduate

  • 海洋システム工学科学技術英語

    2022   Weekly class   Undergraduate

  • 海洋システム工学基礎

    2022   Weekly class   Undergraduate

  • 船舶流体力学

    2022   Weekly class   Undergraduate

  • 海洋システム工学総合演習

    2022   Weekly class   Undergraduate

  • 海の環境と利用の工学

    2022   Intensive lecture   Undergraduate

  • Introduction to Mechanical, Aerospace and Marine-System EngineeringII

    2021    

  • Total Exercises: Marine System Engineering

    2021    

  • Special Project in Aerospace and Marine System Engineering IV

    2021    

  • Special Project in Aerospace and Marine System Engineering III

    2021    

  • Advanced Seminar in Aerospace and Marine System Engineering IV

    2021    

  • Advanced Seminar in Aerospace and Marine System Engineering III

    2021    

  • Special Project in Aerospace and Marine System Engineering II

    2021    

  • Special Project in Aerospace and Marine System Engineering I

    2021    

  • Advanced Seminar in Aerospace and Marine System Engineering II

    2021    

  • Advanced Seminar in Aerospace and Marine System Engineering I

    2021    

  • Undergraduate Project: Marine System Engineering

    2021    

  • Science and Technology for Marine Utilization

    2021    

  • Engineering Ethics for Engineers

    2021    

  • Engineering Ethics for Engineers

    2021    

  • Introduction to Mechanical, Aerospace and Marine-System EngineeringI

    2021    

  • Manufacturing Process Laboratory

    2021   Practical Training  

  • Advanced Theory in Marine Transportation

    2021    

  • Fundamentals of Marine System Engineering

    2021    

  • Fundamentals of Marine System Engineering

    2021    

  • English Technical Expression in Marine System Engineering

    2021    

  • Ship Hydrodynamics

    2021    

  • Dynamics of Floating Bodies

    2021    

  • Advanced Theory in Ship Hydrodynamics

    2021    

  • Selected Topics in Marine Transportation Engineering

    2021    

▼display all

Charge of off-campus class subject

  • 船舶流体力学特論

  • 船舶流体力学

    Institution：Osaka Prefecture University

  • 船舶工学

    Institution：Osaka Sangyo University

  • 海洋輸送工学特論

  • 浮体静力学

    Institution：Osaka Prefecture University

  • 浮体運動学特論

  • 浮体運動学

    Institution：Osaka Prefecture University

  • 振動学

    Institution：Osaka Prefecture University

▼display all

Number of papers published by graduate students

  • 2023

    Number of undergraduate student / college student presentations：2  Number of graduate students presentations：15

  • 2022

    Number of undergraduate student / college student presentations：2  Number of graduate students presentations：11

  • 2021

    Number of graduate students presentations：12

Number of instructed thesis, researches

  • 2024

    Number of instructed the graduation thesis：3  Number of graduation thesis reviews：5

    [Number of instructed the Master's Program] (previous term)：6  [Number of instructed the Master's Program] (letter term)：6

    [Number of master's thesis reviews] (chief)：2  [Number of master's thesis reviews] (vice-chief)：3

    [Number of doctoral thesis reviews] (chief)：2  [Number of doctoral thesis reviews] (vice-chief)：1

  • 2023

    Number of instructed the graduation thesis：3  Number of graduation thesis reviews：5

    [Number of instructed the Master's Program] (previous term)：7  [Number of instructed the Master's Program] (letter term)：5

    [Number of master's thesis reviews] (chief)：4  [Number of master's thesis reviews] (vice-chief)：10

    [Number of doctoral thesis reviews] (chief)：1  [Number of doctoral thesis reviews] (vice-chief)：2

  • 2022

    Number of instructed the graduation thesis：3  Number of graduation thesis reviews：9

    [Number of instructed the Master's Program] (previous term)：6  [Number of instructed the Master's Program] (letter term)：5

    [Number of master's thesis reviews] (chief)：2  [Number of master's thesis reviews] (vice-chief)：7

    [Number of doctoral thesis reviews] (chief)：3  [Number of doctoral thesis reviews] (vice-chief)：0

Social Activities　⇒ Link to the list of Social Activities

  • まちライブラリー＠大阪府立大学 波の中で浮体は揺れる　それでも揺れを減らしたい！

    2020.04 - 2021.03

  • 模擬講義 春日丘高等学校「最後のフロンティア「海」を学ぶ ー海洋システム工学の役割ー」

    2015.04 - 2016.03

  • 高大連携事業 より安全で地球にやさしい小型船舶の開発を目指して

    2012.04 - 2013.03

  • 高大連携事業 水槽での模型実験による性能試験

    2012.04 - 2013.03

  • 第20回青少年サマーセミナー

    2011.04 - 2012.03

  • 高大連携事業 近年の船舶と次世代省エネ船

    2010.04 - 2011.03

  • 第19回青少年サマーセミナー

    2010.04 - 2011.03

  • テクノラボツアー「海洋システム工学分野の研究」 ポスターセッション

    2010.04 - 2011.03

  • 第18回青少年サマーセミナー 海をもっと知ろう海をもっと知ろう～海が地球を救う～

    2009.04 - 2010.03

  • テクノラボツアー「海洋システム工学分野の研究」 ポスターセッション

    2009.04 - 2010.03

  • 高大連携事業 近年の船舶と次世代省エネ船

    2009.04 - 2010.03

  • 高大連携事業 海洋輸送工学・船舶について

    2009.04 - 2010.03

  • 高大連携事業 浮体運動学、船舶の耐航性能　－高速艇の安全・運動性能

    2009.04 - 2010.03

  • 第４５回 テクノラボツアー「海洋システム工学分野の研究」 ポスターセッション

    2008.04 - 2009.03

  • 第17回青少年サマーセミナー 船はつよいな 大きいな～船の丈夫さの秘密～

    2008.04 - 2009.03

  • 第16回青少年サマーセミナー 海水を飲み水に変える魔法　　逆浸透法

    2007.04 - 2008.03

  • 第15回　青少年サマーセミナー 知ろう！遊ぼう！サイフォンの原理

    2006.04 - 2007.03

  • 第37回　テクノラボツアー「物の動き、振動、音の問題を解決する」 「船舶の動揺低減装置の紹介」

    2006.04 - 2007.03

  • 第33回　テクノラボツアー「海洋システム工学分野の研究」 「船舶試験水槽：　超高速船の波浪中実験」

    2006.04 - 2007.03

  • 第14回　青少年サマーセミナー 浮き上がれ！！地上も走る夢の船

    2005.04 - 2006.03

  • 第25回　テクノラボツアー「流体力学の応用」 「流体を計る－流体力から流れの可視化まで－」

    2005.04 - 2006.03

  • 第13回　青少年サマーセミナー お風呂のヒミツ教えます！　～密度成層のナゾ～

    2004.04 - 2005.03

  • 第16回　テクノラボツアー「海洋システム工学分野」 「模型実験をベースにした高速艇の性能評価手法 」

    2004.04 - 2005.03

  • 第11回　青少年サマーセミナー トレジャーハンター　～海は宝の山だ～

    2002.04 - 2003.03

  • 第10回　青少年サマーセミナー 浮かべ！進め！ヨットの科学

    2001.04 - 2002.03

  • 第9回　青少年サマーセミナー もっと海を知ろう

    2000.04 - 2001.03

  • 第8回　青少年サマーセミナー 波のエネルギーのナゾを解明しよう

    1999.04 - 2000.03

  • 第7回　青少年サマーセミナー 潜水船の浮き沈みのナゾを体験しよう

    1998.04 - 1999.03

▼display all

Media Coverage

  • 新シリーズ　大学と海事産業　新センターや海事業界への考え示す（下） Newspaper, magazine

    海事プレス  2022.12

  • 新シリーズ　大学と海事産業　新センターや海事業界への考え示す（上） Newspaper, magazine

    海事プレス  2022.12

Visiting Lectures　⇒ Link to the list of Visiting Lectures

  • 浮体式海洋構造物の流力および運動性能に関する講義（テーマは要相談）

    Category：Engineering (machinery, electronics / physics, electrical / electronics, electrical information, chemical biotechnology, architecture, cities (civil engineering / environment), material chemistry, aerospace, marine systems, applied chemistry, chemistry, materials)

    　More details

    Audience：Preschooler,　Schoolchildren,　Junior high school students,　High school students,　College students,　Teachers,　Researchers,　General,　Company,　Civic organization

  • 船舶性能に関する講義（内容は要相談）

    Category：Engineering (machinery, electronics / physics, electrical / electronics, electrical information, chemical biotechnology, architecture, cities (civil engineering / environment), material chemistry, aerospace, marine systems, applied chemistry, chemistry, materials)

    　More details

    Audience：Preschooler,　Schoolchildren,　Junior high school students,　High school students,　College students,　General

  • 船舶の復原性に関する講義（内容は要相談）

    Category：Engineering (machinery, electronics / physics, electrical / electronics, electrical information, chemical biotechnology, architecture, cities (civil engineering / environment), material chemistry, aerospace, marine systems, applied chemistry, chemistry, materials)

    　More details

    Audience：Preschooler,　Schoolchildren,　Junior high school students,　High school students,　College students,　General

  • 高速艇の性能に関する講義（テーマは要相談）

    Category：Engineering (machinery, electronics / physics, electrical / electronics, electrical information, chemical biotechnology, architecture, cities (civil engineering / environment), material chemistry, aerospace, marine systems, applied chemistry, chemistry, materials)

    　More details

    Audience：Preschooler,　Schoolchildren,　Junior high school students,　High school students,　College students,　Teachers,　Researchers,　General,　Company,　Civic organization

Academic Activities

  • Brodogradnja

    Role(s)： Peer review

    2022.04 - 2023.03

Foreigner acceptance

  • 2023

    foreigners accepted :1

    International Students :1

  • 2022

    foreigners accepted :4

    International Students :1

International exchange activities

  • Stevens Institute of Technologyと大阪公立大学との学術交流に関する協定

    Field category :Research

    Country name :USA   2024.11 - Now

  • 国立アテネ工科大学と大阪公立大学との学術交流に関する協定

    Field category :Research

    Country name :ギリシャ（国立アテネ工科大学）   2023.04 - Now

  • ダナン工科大学と大阪公立大学との学術交流に関する協定

    Field category :Research

    Country name :ベトナム（ダナン工科大学）   2023.04 - Now

  • ユルドゥズ工科大学と大阪公立大学との学術交流に関する協定

    Field category :Research

    Country name :トルコ（ユルドゥズ工科大学）   2022.12 - Now

  • カラデニーズ工科大学と大阪公立大学との学術交流に関する協定

    Field category :Research

    Country name :トルコ（カラデニーズ工科大学）   2022.12 - Now

Job title

  • Job title within the department

    Graduate School of Engineering Division of Aerospace and Marine-System Engineering 

    専攻長  2024.04