Researcher Profiles - OMORI Takeshi

写真a

OMORI Takeshi

Organization

Graduate School of Engineering Division of Mechanical Engineering Associate Professor
School of Engineering Department of Mechanical Engineering

Affiliation

Institute of Engineering

Affiliation campus

Nakamozu Campus

Position

Graduate School of Engineering Division of Mechanical Engineering

Associate Professor 2022.04 - Now
School of Engineering Department of Mechanical Engineering

Associate Professor 2022.04 - Now

Degree

工学博士（Dr.-Ing.）（ Others ）

Committee Memberships (off-campus)

高性能計算機システム委員大阪大学サイバーメディアセンター

2009.04 - Now

Awards

Scientific Contribution Award of the Heat Transfer Society of Japan

Yasutaka Yamaguchi, Donatas Surblys, Takeshi Omori, Hiroki Kusudo

2020.05 Heat Transfer Society of Japan
日本機械学会賞（論文）

足立理人, 大森健史, 梶島岳夫

2018.04 日本機械学会

Papers

The receding contact line cools down during dynamic wetting Reviewed

Hiroki Kusudo, Takeshi Omori, Laurent Joly, Yasutaka Yamaguchi

The Journal of Chemical Physics 159 ( 16 ) 2023.10（ ISSN:0021-9606 ）（ eISSN:1089-7690 ）

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Publishing type：Research paper (scientific journal)

When a contact line (CL)—where a liquid–vapor interface meets a substrate—is put into motion, it is well known that the contact angle differs between advancing and receding CLs. Using non-equilibrium molecular dynamics simulations, we reveal another intriguing distinction between advancing and receding CLs: while temperature increases at an advancing CL—as expected from viscous dissipation, we show that temperature can drop at a receding CL. Detailed quantitative analysis based on the macroscopic energy balance around the dynamic CL showed that the internal energy change of the fluid due to the change of the potential field along the pathline out of the solid–liquid interface induced a remarkable temperature drop around the receding CL, in a manner similar to latent heat upon phase changes. This result provides new insights for modeling the dynamic CL, and the framework for heat transport analysis introduced here can be applied to a wide range of nanofluidic systems.

DOI： 10.1063/5.0171769
Equilibrium molecular dynamics evaluation of the solid–liquid friction coefficient: Role of timescales Reviewed

Haruki Oga, Takeshi Omori, Laurent Joly, Yasutaka Yamaguchi

The Journal of Chemical Physics 159 ( 2 ) 2023.07（ ISSN:0021-9606 ）（ eISSN:1089-7690 ）

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

Solid–liquid friction plays a key role in nanofluidic systems. Following the pioneering work of Bocquet and Barrat, who proposed to extract the friction coefficient (FC) from the plateau of the Green–Kubo (GK) integral of the solid–liquid shear force autocorrelation, the so-called plateau problem has been identified when applying the method to finite-sized molecular dynamics simulations, e.g., with a liquid confined between parallel solid walls. A variety of approaches have been developed to overcome this problem. Here, we propose another method that is easy to implement, makes no assumptions about the time dependence of the friction kernel, does not require the hydrodynamic system width as an input, and is applicable to a wide range of interfaces. In this method, the FC is evaluated by fitting the GK integral for the timescale range where it slowly decays with time. The fitting function was derived based on an analytical solution of the hydrodynamics equations [Oga et al., Phys. Rev. Res. 3, L032019 (2021)], assuming that the timescales related to the friction kernel and the bulk viscous dissipation can be separated. By comparing the results with those of other GK-based methods and non-equilibrium molecular dynamics, we show that the FC is extracted with excellent accuracy by the present method, even in wettability regimes where other GK-based methods suffer from the plateau problem. Finally, the method is also applicable to grooved solid walls, where the GK integral displays complex behavior at short times.

DOI： 10.1063/5.0155628
Higher order lubrication model between slip walls Reviewed

Shintaro Takeuchi, Takeshi Omori, Takehiro Fujii, Takeo Kajishima

Microfluidics and Nanofluidics 27 ( 7 ) 2023.06（ ISSN:1613-4982 ）（ eISSN:1613-4990 ）

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Publishing type：Research paper (scientific journal)

Abstract

A higher order lubrication model between slip walls is proposed for predicting the flow fields that cannot be described by the standard lubrication models based on the thin-gap approximation. The analysis shows that when considering the non-negligible pressure gradient in the surface-normal direction, the local pressure can be separated into (i) the base contribution by the modified Reynolds lubrication equation and (ii) the higher order component varying in both longitudinal and wall-normal directions, which takes the form proportional to the longitudinal derivative of the local velocity of the Couette–Poiseuille flow. For both (i) and (ii), the effect of the slip boundaries appears as the apparent displacements of the no-slip solid walls, and for (i) additional terms (to the no-slip case) also appear. The validity of the higher order slip-wall lubrication model is established by comparing the analytical prediction of the pressure with the fully resolved numerical results in a relatively wide region between a no-slip corrugated wall and a flat plate with varying slip length: the contribution of the higher order term is identified as the decreased lubrication pressure due to velocity slip. The model also successfully predicts the trend of pressure change between the varying slip case and a more realistic system with constant slip length for a channel, where the thin-gap approximation does not hold.

DOI： 10.1007/s10404-023-02644-5

Other URL： https://link.springer.com/article/10.1007/s10404-023-02644-5/fulltext.html
(Invited) Nanoscale Wetting and Its Connection with Macroscopic Young's Equation Invited Reviewed

Yasutaka Yamaguchi, Hiroki Kusudo, Carlos Bistafa, Donatas Surblys, Takeshi Omori, Gota Kikugawa

ECS Transactions 108 ( 4 ) 93 - 102 2022.05

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Publishing type：Research paper (scientific journal)

DOI： 10.1149/10804.0093ecst
Coupled Simulation of Flow and Chemical Reaction with Finite Reaction Rate for Decarburization of Molten Iron using Gas Jet of Carbon Dioxide Reviewed

Tetsuya Yamamoto, Takeshi Omori, Takeo Kajishima

ISIJ International 62 ( 1 ) 38 - 47 2022.01

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Publishing type：Research paper (scientific journal)

DOI： 10.2355/isijinternational.ISIJINT-2021-296
Quantifying the solid-fluid interfacial tensions depending on the substrate curvature: Young's equation holds for wetting around nanoscale cylinder Reviewed

Keitaro Watanabe, Hiroki Kusudo, Carlos Bistafa, Takeshi Omori, Yasutaka Yamaguchi

AIP Publishing　The Journal of Chemical Physics 2022.01（ ISSN:0021-9606 ）

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Publishing type：Research paper (scientific journal)

DOI： 10.1063/5.0079816
Slip length measurement in rectangular graphene nanochannels with a 3D flow analysis Reviewed

Kuan-Ting Chen, Qin-Yi Li, Takeshi Omori, Yasutaka Yamaguchi, Tatsuya Ikuta, Koji Takahashi

Elsevier BV　Carbon 189 ( 15 ) 162 - 172 2021.12（ ISSN:0008-6223 ）

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Publishing type：Research paper (scientific journal)

DOI： 10.1016/j.carbon.2021.12.048
Local stress tensor calculation by the method-of-plane in microscopic systems with macroscopic flow: A formulation based on the velocity distribution function Reviewed

Hiroki Kusudo, Takeshi Omori, Yasutaka Yamaguchi

AIP Publishing　The Journal of Chemical Physics 155 ( 18 ) 184103 - 184103 2021.11（ ISSN:0021-9606 ）

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Publishing type：Research paper (scientific journal)

DOI： 10.1063/5.0062889
Theoretical framework for the atomistic modeling of frequency-dependent liquid-solid friction Reviewed

Haruki Oga, Takeshi Omori, Cecilia Herrero, Samy Merabia, Laurent Joly, Yasutaka Yamaguchi

American Physical Society (APS)　Physical Review Research 3 ( 3 ) 2021.07

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Publishing type：Research paper (scientific journal)

DOI： 10.1103/physrevresearch.3.l032019

Other URL： http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevResearch.3.L032019/fulltext
Wilhelmy equation revisited: A lightweight method to measure liquid–vapor, solid–liquid, and solid–vapor interfacial tensions from a single molecular dynamics simulation Reviewed

Yuta Imaizumi, Takeshi Omori, Hiroki Kusudo, Carlos Bistafa, Yasutaka Yamaguchi

AIP Publishing　The Journal of Chemical Physics 153 ( 3 ) 034701 - 034701 2020.07（ ISSN:0021-9606 ）

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Publishing type：Research paper (scientific journal)

DOI： 10.1063/5.0011979
Erratum: “Extraction of the equilibrium pinning force on a contact line exerted from a wettability boundary of a solid surface through the connection between mechanical and thermodynamic routes” [J. Chem. Phys. 151, 154501 (2019)] Reviewed

Hiroki Kusudo, Takeshi Omori, Yasutaka Yamaguchi

The Journal of Chemical Physics 152 ( 18 ) 189901 - 189901 2020.05（ ISSN:0021-9606 ）（ eISSN:1089-7690 ）

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Publishing type：Research paper (scientific journal)

DOI： 10.1063/5.0010632
Erratum: “Interpretation of Young’s equation for a liquid droplet on a flat and smooth solid surface: Mechanical and thermodynamic routes with a simple Lennard-Jones liquid” [J. Chem. Phys. 150, 044701 (2019)] Reviewed

Yasutaka Yamaguchi, Hiroki Kusudo, Donatas Surblys, Takeshi Omori, Gota Kikugawa

The Journal of Chemical Physics 152 ( 17 ) 179901 - 179901 2020.05（ ISSN:0021-9606 ）（ eISSN:1089-7690 ）

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Publishing type：Research paper (scientific journal)

DOI： 10.1063/5.0010630

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Books and Other Publications

化学工学系流体シミュレーションの最前線 : 基礎・実践・将来展望

化学工学会関東支部, 化学工学会粒子・流体プロセス部会（ Role： Contributor , ナノスケールシミュレーション）

化学工学会関東支部,三恵社 (発売) 2024.01 （ ISBN:9784866938943 ）

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Total pages：vi, 221p

CiNii Books

MISC

Phenomenological Model for the Flow in Fine Conduits: Fluid Mechanics of the Flow with Mesoscopic Regions Invited

Takeshi Omori

Chemical Engineering of Japan 87 ( 3 ) 114 - 116 2023.03

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Authorship：Lead author,　Last author,　Corresponding author Publishing type：Article, review, commentary, editorial, etc. (scientific journal)

Presentations

Thermal Difference in Advancing and Receding Contact Lines: Insight from MD Simulation

Hiroki Kusudo, Takeshi Omori, Laurent Joly, Yasutaka Yamaguchi

AJK-FED 2023 2023.07

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Presentation type：Oral presentation (general)
線形応答理論に基づく平衡分子動力学系を用いた固体・液体間の滑り現象の再現とその応用

大賀春輝, 大森健史, 山口康隆

日本伝熱シンポジウム 2023.05

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Presentation type：Oral presentation (general)
固液境界における流体力学的境界条件の周波数依存性

山本紘生, 大森健史

日本伝熱シンポジウム 2023.05

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Presentation type：Poster presentation
Hydrodynamic boundary condition on the solid surface with geometrical inhomogeneity

2022.12

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Presentation type：Oral presentation (general)
Measurement method of solid-liquid friction coefficient using friction force auto-correlation function and its application to atomically non-flat solid surfaces

2022.12

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Presentation type：Oral presentation (general)
線形応答理論から導かれる平衡ゆらぎと非定常応答との関係に関する分子動力学解析

大賀春輝, 大森健史, 山口康隆

日本流体力学会年会 2022.09

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Presentation type：Oral presentation (general)
MD による固体と流体の界面張力の様々な算出法

新宅実慶, 楠戸宏城, 大森健史, 藤野大成, Carlos BISTAFA, 山口康隆

日本伝熱シンポジウム 2022.05

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Presentation type：Oral presentation (general)
動的濡れの非平衡分子動力学解析：熱流体場の抽出に基づく，前進・後退接触線近傍の局所的温度上昇・低下の解析

楠戸宏城, 大森健史, 山口康隆

日本伝熱シンポジウム 2022.05

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Presentation type：Oral presentation (general)
Measurement and modulation of the liquid slip length in graphene nanochannels

Kuan-Ting Chen, 大森健史, 生田竜也, 李秦宜, 山口康隆, 高橋厚史

日本伝熱シンポジウム 2022.05

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Presentation type：Poster presentation
平衡分子動力学系を用いた壁面すべりを有するPoiseuille流れの流量抽出方法の提案

大賀春輝, 千崎亮平, 大森健史, 山口康隆

日本伝熱シンポジウム 2022.05

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Presentation type：Oral presentation (general)
滑り速度を有する境界に対する埋め込み境界射影法：境界力の分配演算子が満たすべき条件 Domestic conference

藤井健博, 大森健史, 梶島岳夫

数値流体力学シンポジウム 2021.12

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Venue：オンライン
マクロの流れを伴うミクロの系における局所的応力テンソルの計算: 速度分布関数に基づくMethod-of-Planeの定式化 Domestic conference

楠戸宏城, 大森健史, 山口康隆

日本流体力学会年会 2021.09
固液摩擦力の揺らぎを用いた固液摩擦の周波数特性の抽出 Domestic conference

大賀春輝, 大森健史, Herrero Cecilia, Merabia Samy, Joly Laurent, 山口康隆

日本流体力学会年会 2021.09
微小スケールの物理に立脚した動的濡れの数値計算 Invited Domestic conference

大森健史

化学工学会粒子・流体プロセス部会熱物質流体工学分科会 2021.09
A Three-Dimensional Model for Capillary Flow in Rectangular Nanochannels Domestic conference

Kuan-Ting Chen, Qin-Yi Li, Takeshi Omori, Yasutaka Yamaguchi, Tatsuya Ikuta, Koji Takahashi

A Three-Dimensional Model for Capillary Flow in Rectangular Nanochannels 2021.05
Lennard-Jones 流体の動的接触線近傍の流れ場と粘性応力の抽出 Domestic conference

楠戸宏城, 大森健史, 山口康隆

日本伝熱シンポジウム 2021.05
縞状の濡れ性の分布を持つ固体面と単純液体の間の摩擦に関する非平衡分子動力学解析 Domestic conference

千﨑亮平, 大賀春輝, 大森健史, 山口康隆

日本伝熱シンポジウム 2021.05
定常な動的接触線近傍の応力分布に関する分子動力学解析 Domestic conference

楠戸宏城, 大森健史, 山口康隆

数値流体力学シンポジウム 2020.12
平衡MDとLFHによる固液間剪断力の自己相関係数算出 Domestic conference

大賀春輝, 大森健史, 山口康隆

数値流体力学シンポジウム 2020.12
Lennard-Jones液体面に浸されたナノスケールの固体円筒に働く毛管力の曲率依存性 Domestic conference

渡部桂太朗, 楠戸宏城, 大森健史, 山口康隆

数値流体力学シンポジウム 2020.12
静電相互作用を考慮した気液二相流の数値解析 Domestic conference

三輪敦俊, 大森健史, 梶島岳夫

数値流体力学シンポジウム 2020.12
Wilhelmyの関係式の再考: 単一のシミュレーションによる固気液の3つの界面張力の算出 Domestic conference

今泉優太, 大森健史, 楠戸宏城, Bistafa Carlos, 山口康隆

数値流体力学シンポジウム 2020.12
Cahn-Hilliard方程式を用いた二相流解析におけるOpenMPI/OpenACC Hybrid Computing Domestic conference

大島洋喜, 大森, 健史, 梶島岳夫

数値流体力学シンポジウム 2020.12
すべり境界条件に対する埋め込み境界射影法の開発 Domestic conference

藤井健博, 大森健史, 梶島岳夫

日本機械学会流体工学部門講演会 2020.11
MoP による定常な動的接触線近傍の応力分布に関する考察 Domestic conference

楠戸宏城, 大森健史, 山口康隆

日本流体力学会年会 2020.09
固液界面における摩擦力の揺らぎと流体力学の関係: Langevin 方程式を介した接続 Domestic conference

大賀春輝, 大森健史, 山口康隆

日本流体力学会年会 2020.09
OH 終端されたシリカ表面上の濡れに関する理論解析 Domestic conference

ビスタファカルロス, スルブリスドナタス, 大森健史, 山口康隆

日本流体力学会年会 2020.09
固体壁面に接する３次元Lennard-Jones液滴の接触線近傍における力学的バランス Domestic conference

新宅実慶, 楠戸宏城, 大森健史, 山口康隆

日本流体力学会年会 2020.09
接触線近傍での流体界面の易動度 Domestic conference

赤井優斗, 大島洋喜, 大森健史, 山口康隆, 梶島岳夫

日本流体力学会年会 2020.09

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Grant-in-Aid for Scientific Research

Mesoscopic physics of the slip between solid and liquid

Grant-in-Aid for Scientific Research(B) 2027
Mesoscopic physics of the slip between solid and liquid

Grant-in-Aid for Scientific Research(B) 2026
Mesoscopic physics of the slip between solid and liquid

Grant-in-Aid for Scientific Research(B) 2025
Conservation Laws of Microscopic Wetting: from Equilibrium to Nonequilibrium

Grant-in-Aid for Scientific Research(B) 2025
Mesoscopic physics of the slip between solid and liquid

Grant-in-Aid for Scientific Research(B) 2024
Conservation Laws of Microscopic Wetting: from Equilibrium to Nonequilibrium

Grant-in-Aid for Scientific Research(B) 2024
固液滑りのメソスケール物理

Grant-in-Aid for Scientific Research(B) 2023.04
ミクロの濡れの保存則：平衡系から非平衡系へ

Grant-in-Aid for Scientific Research(B) 2022.04

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Charge of on-campus class subject

機械マテリアル演習

2024 Weekly class Undergraduate
機械システム演習

2024 Weekly class Undergraduate
エネルギー機械演習

2024 Weekly class Undergraduate
機械流体力学3

2024 Weekly class Undergraduate
機械基礎実験

2024 Weekly class Undergraduate
機械設計演習

2024 Weekly class Undergraduate
機械流体力学1

2024 Weekly class Undergraduate
機械工学概論

2024 Weekly class Undergraduate
数値流体力学特論

2024 Weekly class Graduate school
機械系特別研究第1

2024 Intensive lecture Graduate school
機械系特別演習第1

2024 Intensive lecture Graduate school
機械系特別演習

2024 Intensive lecture Graduate school
初年次ゼミナール

2024 Weekly class Graduate school
設計製作実習

2024 Intensive lecture Undergraduate
設計製作実習

2024 Intensive lecture Undergraduate
機械流体力学1

2023 Weekly class Undergraduate
初年次ゼミナール

2023 Weekly class Graduate school
機械系特別演習

2023 Intensive lecture Graduate school
数値流体力学特論

2023 Weekly class Graduate school
機械系特別研究第1

2023 Intensive lecture Graduate school
卒業研究

2023 Intensive lecture Undergraduate
設計製作実習

2023 Weekly class Undergraduate
計測評価工学

2023 Weekly class Undergraduate
機械製図演習

2023 Weekly class Undergraduate
機械工作実習

2023 Weekly class Undergraduate
機械系特別研究

2023 Intensive lecture Graduate school
数値計算法

2023 Weekly class Undergraduate
機械工学実験

2023 Weekly class Undergraduate
機械系特別研究第2

2023 Intensive lecture Graduate school
機械系特別演習

2022 Intensive lecture Graduate school
数値流体力学特論

2022 Weekly class Graduate school
機械系特別演習第1

2022 Intensive lecture Graduate school
機械系特別演習第1

2022 Intensive lecture Graduate school
機械系特別演習第2 （杉本）

2022 Intensive lecture Graduate school
特別演習（流体力学）

2022 Weekly class Graduate school
計測評価工学

2022 Weekly class Undergraduate
エンジニアリングデザイン

2022 Intensive lecture Undergraduate
機械系特別研究（杉本）

2022 Intensive lecture Graduate school
前期特別研究(機械物理系)

2022 Intensive lecture Graduate school
卒業研究(機械工学科)

2022 Intensive lecture Undergraduate
設計製作実習(B)

2022 Weekly class Undergraduate
設計製作実習(A)

2022 Weekly class Undergraduate
数値計算法

2022 Weekly class Undergraduate
機械工学実験(B)

2022 Weekly class Undergraduate
機械工学実験(A)

2022 Weekly class Undergraduate

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