Faculty Profiles - KOUCHI Toshinori

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VSL Analysis and Influence on Trajectory of Electrodynamic Heat Shield Atmospheric Entry Capsule

永田靖典, 前田真吾, 河内俊憲

宇宙科学技術連合講演会講演集(CD-ROM) 64th 2020

Control of large-scale vortices occurring in the semiconductor wafer cleaner

KOUCHI Toshinori, AOYAMA Tsubasa, NAGATA Yasunori, YANASE Shinichiro

The Proceedings of Conference of Chugoku-Shikoku Branch 2020.58 05b5 2020

Effect of LES resolution for inner layer in turbulent boundary layer on supersonic wall injection

HASHIMOTO Tomoyuki, KOUCHI Toshinori, NAGATA Yasunori, YANASE Shinichiro, AOKI Rei

The Proceedings of Conference of Chugoku-Shikoku Branch 2020.58 05c2 2020

CFD analysis on MHD control effect of model surface conductivity in weakly ionized plasma flow

SHIMIZU Daichi, NAGATA Yasunori, KOUCHI Toshinori, YANASE Shinichiro, NORII Takumi

The Proceedings of Conference of Chugoku-Shikoku Branch 2020.58 05c3 2020

An experimental study of relationship between CNF viscosity characteristics and pipe friction

YAMANE Eisuke, KOUCHI Toshinori, YANASE Shinichiro, NAGATA Yasunori, YASUDA Kazunori

The Proceedings of Conference of Chugoku-Shikoku Branch 2020.58 05a5 2020

VSL Analysis of Atmospheric Entry Capsule with Electrodynamic Heat Shield

NAGATA Yasunori, MAEDA Shingo, KOUCHI Toshinori, YANASE Shinichiro

The Proceedings of Mechanical Engineering Congress, Japan 2020 S19104 2020

Language：Japanese Publisher：The Japan Society of Mechanical Engineers

The electrodynamic heat shield is a new type of heat protection system for the atmospheric-entry vehicle, which utilizes the Lorentz force acting on the weakly ionized plasma flow inside the shock layer. We are developing the Viscous Shock Layer (VSL) analysis method for an electrodynamic heat shield for quick estimation of performance, including the effect on the reentry trajectory. In this study, we propose the chemical non-equilibrium VSL equations for the electrodynamic heat shield analysis and compare its result to CFD calculation and theoretical relationship. In proposed VSL equations, momentum and energy equations have additional terms, and species conservation equations have no change. Inside the shock layer, ionization reaction is occurred due to high temperature, and electrical conductivity is changed by the flow condition, such as altitude and flow velocity. VSL results in the case of several altitudes of reentry trajectory agree with CFD results on electrical conductivity estimation. And, the stagnation heat flux diminish rates also agree with the theoretical relationship based on the interaction parameter Q. Therefore, our VSL analysis method can estimate the effect of electrodynamic heat shield depending on the flow condition.

DOI： 10.1299/jsmemecj.2020.s19104

CiNii Article

J-GLOBAL

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Introduction of Fluid Dynamics Laboratory in Okayama University

47 ( 8 ) 507 - 512 2019.8

An experimental study of the drag reduction pipe flows with the addition of natural macromolecules

柳瀬眞一郎, 山根映介, 河内俊憲, 永田靖典, 保田和則

日本機械学会流体工学部門講演会講演論文集(CD-ROM) 97th 2019

Influence of Free-stream Turbulence on Supersonic Jet Mixing

河内俊憲, 大元朝斗, 宮井祥真, 永田靖典, 柳瀬眞一郎

流体力学講演会/航空宇宙数値シミュレーション技術シンポジウム講演集(CD-ROM) 51st-37th 2019

LES Analysis of Influence of Free-stream Turbulence on Supersonic Jet Mixing

永田靖典, 横井聖太朗, 片山智耀, 河内俊憲, 柳瀬眞一郎

流体力学講演会/航空宇宙数値シミュレーション技術シンポジウム講演集(CD-ROM) 51st-37th 2019

Shock-induced Separation and Shockwave Oscillation on Swept and Unswept Two-Dimensional Common Research Model Wings

小池俊輔, 松本葉, 河内俊憲

流体力学講演会/航空宇宙数値シミュレーション技術シンポジウム講演集(CD-ROM) 51st-37th 2019

Velocimetry in Supersonic Flows Using Acetone Condensation Nanoparticle

河内俊憲, 永田靖典, 柳瀬眞一郎

流体力学講演会/航空宇宙数値シミュレーション技術シンポジウム講演集(CD-ROM) 51st-37th 2019

吸込みバルブ周りの脈動流れ

佐々木翼, 高見敏弘, 柳瀬眞一郎, 河内俊憲

ターボ機械協会講演会(CD-ROM) 82nd 2019

Measurement of Turbulence in Supersonic Flow by the Shadowgraph Method

香取幸汰, 細谷昌平, 真殿健広, 河内俊憲, 永田靖典, 柳瀬眞一郎, 富岡定毅, 小林完

宇宙科学技術連合講演会講演集(CD-ROM) 63rd 2019

Convection speed of large scale structure in ejector jet

松本葉, 中矢雅人, 井上広夢, 河内俊憲, 永田靖典, 柳瀬眞一郎

宇宙科学技術連合講演会講演集(CD-ROM) 63rd 2019

LES解析における主流乱れの超音速噴流混合への影響

永田靖典, 横井聖太朗, 青木礼, 河内俊憲, 柳瀬眞一郎

数値流体力学シンポジウム講演論文集(CD-ROM) 33rd 2019

小型超音速風洞内にワイヤー格子を設置した流れのRANSによる数値解析

大島渉, 永田靖典, 河内俊憲, 柳瀬眞一郎

数値流体力学シンポジウム講演論文集(CD-ROM) 33rd 2019

フラクタル格子乱流場のPIV計測とその妥当性の検証

宮里健志, 柳瀬眞一郎, 河内俊憲, 永田靖典, 中野和輝

日本機械学会中国四国支部総会・講演会講演論文集(CD-ROM) 57th 2019

凝集ナノ粒子を用いた超音速流れの可視化とPIVに関する研究

福田征弥, 柳瀬眞一郎, 河内俊憲, 永田靖典, 宮井祥真

日本機械学会中国四国支部総会・講演会講演論文集(CD-ROM) 57th 2019

RANSを用いた低レイノルズ数域における翼型NACA0012の二次元解析

井上佑希, 永田靖典, 河内俊憲, 柳瀬眞一郎

日本機械学会中国四国支部総会・講演会講演論文集(CD-ROM) 57th 2019

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