Updated on 2025/03/29
Profile Information
Research Activity
Contribution to Society
International exchange
Management administration
Updated on 2025/03/29
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
博士（工学） （ Others ）
Frontier Technology (Aerospace Engineering, Marine and Maritime Engineering) / Marine engineering / Navalarchitects and Ocean engineering
Frontier Technology (Aerospace Engineering, Marine and Maritime Engineering) / Marine engineering
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
offshore wind power
tank test
underwater vehicle
roll damping
computational fluid dynamics
damaged ship stability
多胴船
Stability
Safety
High-Speed Planing Craft
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
Development of Performans Evaluation Method of High-Speed Planing Craft
high speed craft, planing craft, resistance and propalsion, instability, maneuverbility
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
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
日本船舶海洋工学会
2005.04 - Now Domestic
水産システム協会
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
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
委員長 日本船舶海洋工学会JTTC
2021.06 - Now
Executive Committee member ITTC
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
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
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 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 日本小型船舶検査機構
2012.04 - 2013.03
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
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
More details
Country：Japan
日本造船工業会賞
2013.05 日本造船工業会
More details
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
More details
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
More details
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
More details
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
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
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 ）
More details
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.
Jun Umeda, Tomoki Taniguchi, Toru Katayama
Ocean Engineering 308 2024.09（ ISSN:0029-8018 ）
More details
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.
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 ）
More details
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
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 ）
More details
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.
Yusuke Yamamoto, Tomoki Taniguchi, Toru Katayama
Volume 4: Ocean Space Utilization 4 2024.06（ ISBN:9780791887813 ）
More details
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.
Nguyen Thi Ha Phuong, Naofumi Yoshida, Tomoki Taniguchi, Toru Katayama
Polish Maritime Research 31 ( 2 ) 4 - 12 2024.06（ ISSN:12332585 ） （ eISSN:2083-7429 ）
More details
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.
Emre Pesman, Hasan Islam Copuroglu, Toru Katayama
Ocean Engineering 291 2024.01（ ISSN:00298018 ）
More details
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 ）
More details
Authorship：Lead author, Corresponding author Publishing type：Research paper (scientific journal)
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 ）
More details
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 ）
More details
Publishing type：Research paper (scientific journal)
Repository URL： http://hdl.handle.net/10466/0002001580
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 ）
More details
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.
Repository URL： http://hdl.handle.net/10466/0002001578
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 ）
More details
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.
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 ）
More details
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.
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 ）
More details
Authorship：Last author Publishing type：Research paper (scientific journal)
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
More details
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 ）
More details
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 ）
More details
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>
Study on Scale Effects of Hydrodynamics around Prismatic Planing Surface by using CFD Reviewed
( 36 ) 1 - 13 2022.12（ ISSN:1880-3717 ）
More details
Authorship：Lead author, Corresponding author Publishing type：Research paper (scientific journal) International / domestic magazine：Domestic journal
Yusuke Yamamoto, Mizuki Kinugasa, Mayo Morita, Toru Katayama
Volume 4: Ocean Space Utilization 4 2022.06（ ISBN:9780791885888 ）
More details
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.
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 ）
More details
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>
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
More details
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
More details
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
More details
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
More details
Kind of work：Joint Work
Yusuke Yamamoto, Taishi Morimoto, Toru Katayama, Masahiro Goto, Ryo Kodama
Volume 5: Ocean Space Utilization 2021.06（ ISBN:9780791885154 ）
More details
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.
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
More details
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
More details
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
More details
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
More details
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
More details
Authorship：Lead author, Corresponding author
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
More details
Kind of work：Joint Work
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 ）
More details
<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>
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 ）
More details
<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>
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 ）
More details
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.
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 ）
More details
<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>
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
More details
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
More details
Authorship：Lead author, Corresponding author Publishing type：Research paper (international conference proceedings)
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.
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
More details
Kind of work：Joint Work
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 ）
More details
Authorship：Lead author, Corresponding author
<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>
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
More details
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
More details
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
More details
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 ）
More details
Authorship：Lead author, Corresponding author Publishing type：Research paper (scientific journal)
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.
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 ）
More details
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.
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 ）
More details
Publishing type：Research paper (scientific journal)
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 ）
More details
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.
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 ）
More details
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).
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
More details
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
More details
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
More details
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
More details
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
More details
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
More details
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
More details
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
More details
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
More details
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
More details
Kind of work：Joint Work
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
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
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 ）
More details
Responsible for pages：1-200
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
More details
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
More details
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
More details
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
More details
Authorship：Lead author, Corresponding author 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
More details
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
More details
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
More details
Publishing type：Research paper, summary (national, other academic conference)
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
More details
Authorship：Lead author Publishing type：Research paper, summary (national, other academic conference)
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
More details
Publishing type：Research paper, summary (national, other academic conference)
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
More details
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
More details
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 ）
More details
Authorship：Lead author
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
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
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
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 ）
More details
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 ）
More details
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 ）
More details
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 ）
More details
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 ）
More details
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 ）
More details
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 ）
More details
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 ）
More details
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 ）
More details
Conference proceedings, the Japan Society of Naval Architects and Ocean Engineers ( 30 ) 417 - 423 2020.05（ ISSN:2185-1840 ）
More details
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 ）
More details
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.
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 ）
More details
Conference proceedings, the Japan Society of Naval Architects and Ocean Engineers ( 29 ) 157 - 162 2019.11（ ISSN:2185-1840 ）
More details
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
More details
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 ）
More details
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
More details
Authorship：Lead author, Corresponding author
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
More details
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
More details
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
More details
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
More details
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
More details
Presentation type：Oral presentation (general)
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
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
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
More details
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
More details
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
More details
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
More details
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
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
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
More details
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
More details
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
More details
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
More details
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
More details
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
More details
Presentation type：Poster presentation
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
More details
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
More details
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
More details
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
More details
Presentation type：Poster presentation
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
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
More details
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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'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.
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
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
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.
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
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
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
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
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
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&sim;4.0 and Rn=5&times;10<SUP>5</SUP>&sim;3&times;10<SUP>6</SUP>, 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
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
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
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
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
損傷時復原性計算プログラム
More details
Work type：Software
小型船舶用浸水時復原性計算プログラム
More details
Work type：Software
小型船舶用CADシステム
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
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
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
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
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
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
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
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
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
2023 Number of researchers：1
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
工学研究の最先端
2024 Intensive lecture Graduate school
航空宇宙海洋系特別演習
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
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
浮体静力学
2023 Weekly class Undergraduate
海洋システム工学概論
2023 Weekly class Undergraduate
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
航空宇宙海洋系特別演習
2023 Intensive lecture Graduate school
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
船舶海洋工学プロジェクト1
2023 Weekly class Undergraduate
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
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
浮体運動学
2022 Weekly class Undergraduate
海洋輸送工学特別講義
2022 Weekly class Graduate school
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
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
振動学
Institution：Osaka Prefecture University
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
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
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
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 水槽での模型実験による性能試験
2012.04 - 2013.03
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
第20回青少年サマーセミナー
2011.04 - 2012.03
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
高大連携事業 近年の船舶と次世代省エネ船
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
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
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
Brodogradnja
Role(s)： Peer review
2022.04 - 2023.03
2023
foreigners accepted :1
International Students :1
2022
foreigners accepted :4
International Students :1
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 within the department
Graduate School of Engineering Division of Aerospace and Marine-System Engineering
専攻長 2024.04
Copyright (C) 2022 Osaka Metropolitan University, All Rights Reserved.