KITAMURA Keiichi

Affiliation

Faculty of Engineering, Division of Systems Research

Job Title

Associate Professor

Date of Birth

1979

Research Fields, Keywords

Hypersonic Flow, Aerodynamics, Aerospace Engineering, Multiphase Flow, Computational Fluid Dynamics (CFD), Fluid Dynamics

Mail Address

E-mail address

Related SDGs




ORCID  https://orcid.org/0000-0001-7550-8990

写真a

The Best Research Achievement in Research Career 【 display / non-display

  • 【Awards】 The Young Scientists' Prize, The Commendation for Science and Technology by the Minister of Education, Culture, Sports, Science and Technology  2019.04

    【Book】 Advancement of Shock Capturing Computational Fluid Dynamics Methods: Numerical Flux Functions in Finite Volume Method  2020.11

    【Published Thesis】 Towards shock-stable and accurate hypersonic heating computations: A new pressure flux for AUSM-family schemes  2013.07

The Best Research Achievement in the last 5 years 【 display / non-display

Education 【 display / non-display

  • 2004.4
    -
    2008.3

    Nagoya University   Department of Aerospace Engineering   Doctor Course   Completed

  • 2006.8
    -
    2007.7

    University of Michigan   Department of Aerospace Engineering   Doctor Course   Other

  • 2002.4
    -
    2004.3

    Nagoya University   Department of Aerospace Engineering   Master Course   Completed

  • 1998.4
    -
    2002.3

    Tokyo Institute of Technology   Dept. of Mechano-Aerospace Engineering   Graduated

Degree 【 display / non-display

  • Doctor of Engineering - Nagoya University

Campus Career 【 display / non-display

  • 2014.4
     
     

    Duty   Yokohama National UniversityFaculty of Engineering   Division of Systems Research   Associate Professor  

  • 2018.4
     
     

    Concurrently   Yokohama National UniversityGraduate school of Engineering Science   Department of Mechanical Engineering, Materials Science and Ocean Engineering   Associate Professor  

  • 2017.4
     
     

    Concurrently   Yokohama National UniversityCollege of Engineering Science   Department of Mechanical Engineering, Materials Science and Ocean Engineering   Associate Professor  

  • 2014.4
     
     

    Concurrently   Yokohama National UniversityCollege of Engineering Science   Department of Mechanical Engineering and Materials Science   Associate Professor  

  • 2014.4
     
     

    Concurrently   Yokohama National UniversityGraduate School of Engineering   Department of Systems Integration   Associate Professor  

External Career 【 display / non-display

  • 2023.8
    -
    2024.3

    University of Cambridge   Department of Engineering   Visiting Academic Fellow  

  • 2012.10
    -
    2014.3

    Nagoya University, Department of Aerospace Engineering, Assistant Professor   Assistant Professor  

  • 2011.10
    -
    2012.9

    NASA, Glenn Research Center, Visiting Researcher   Visiting Researcher  

  • 2011.4
    -
    2012.9

    Japan Aerospace Exploration Agency (JAXA), JEDI Center, Research Fellow of the Japan Society for the Promotion of Science (JSPS)   Special researcher of the Japan Society for the Promotion of Science  

  • 2008.4
    -
    2011.3

    Japan Aerospace Exploration Agency (JAXA), JEDI Center, Researcher  

Academic Society Affiliations 【 display / non-display

  • 2018.12
     
     
     

    The Japan Society of Mechanical Engineers

  • 2017.10
     
     
     

    The Japan Society of Fluid Mechanics

  • 2004
     
     
     

    AIAA (American Institute of Aeronautics and Astronautics)

  • 2003
     
     
     

    JSASS (Japan Society for Aeronautical and Space Sciences)

Research Areas 【 display / non-display

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

  • Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Fluid engineering

 

Research Career 【 display / non-display

  • A Unified CFD Method for High-Speed, Low-Speed, and Multiphase Flows based on Numerical Evaluation

    Project Year:

Books 【 display / non-display

  • Advancement of shock capturing computational fluid dynamics methods : numerical flux functions in finite volume method

    Kitamura Keiichi( Role: Sole author)

    Springer  ( ISBN:9789811590108

    CiNii Amazon

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    Total pages:147   Responsible for pages:147   Language:English Book type:Scholarly book

    This book offers a compact primer on advanced numerical flux functions in computational fluid dynamics (CFD). It comprehensively introduces readers to methods used at the forefront of compressible flow simulation research. Further, it provides a comparative evaluation of the methods discussed, helping readers select the best numerical flux function for their specific needs.

    The first two chapters of the book reviews finite volume methods and numerical functions, before discussing issues commonly encountered in connection with each. The third and fourth chapter, respectively, address numerical flux functions for ideal gases and more complex fluid flow cases― multiphase flows, supercritical fluids and magnetohydrodynamics. In closing, the book highlights methods that provide high levels of accuracy.

    The concise content provides an overview of recent advances in CFD methods for shockwaves. Further, it presents the author’s insights into the advantages and disadvantages of each method, helping readers implement the numerical methods in their own research.

  • 空飛ぶクルマ  ~空のモビリティ革命に向けた開発最前線~

    北村圭一, 嶋 英志,(監修)中野 冠( Role: Contributor ,  第1編 第3章 第1節 空気力学による空飛ぶクルマ設計)

    株式会社NTS  ( ISBN:978-4-86043-678-0 C3

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    Total pages:280   Responsible for pages:10   Language:Japanese Book type:Scholarly book

Thesis for a degree 【 display / non-display

  • Numerical Analysis on Hypersonic Shock Interacting Flow

    Keiichi KITAMURA

    2008.3

    Doctoral Thesis   Single Work  

  • 二段式宇宙往還機における空力干渉流れ場の数値解析

    北村 圭一

    2004.2

    Master Thesis   Single Work  

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    名古屋大学(工学研究科航空宇宙工学専攻)
    二段式宇宙往還機(TSTO)周りに作られる極超音速空力干渉流れ場を数値的に明らかにした。

Papers 【 display / non-display

  • Numerical Study on Aerodynamic Characteristics of Wing within Propeller Slipstream at Low-Reynolds-Number

    FURUSAWA Yoshikatsu, KITAMURA Keiichi, IKAMI Tsubasa, NAGAI Hiroki, OYAMA Akira

    TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES   67 ( 1 )   12 - 22   2024.1  [Reviewed]

    DOI CiNii Research

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    Authorship:Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:一般社団法人 日本航空宇宙学会   Joint Work  

    <p>To realize a propeller-driven Mars airplane, the propeller-wing flow interaction characteristics should be clarified. Thus, we conducted numerical simulations of the propeller-wing interaction at low Reynolds number conditions (<i>Re</i> = 3.0 × 10<sup>4</sup>) corresponding to Mars atmosphere, focusing on the propeller slipstream effects on the fixed wing. Solutions for the tractor case (propeller in front of the fixed wing) and the <i>wing only</i> case were compared. The results showed that in the tractor case, the lift coefficient (<i>C<sub>L</sub></i>) of the fixed wing increased with the angle of attack (<i>α</i>) more linearly than for the <i>wing only</i> case and showed delayed stall because the propeller slipstream favorably suppressed the expansion of the recirculation region over the fixed wing in the time-averaged flow fields, supporting the experimental result. The flow over the fixed wing separated from near the leading-edge in both low and high thrust conditions even at a moderate angle of attack (<i>α</i> = 5°), whereas previous studies at relatively high Reynolds numbers (<i>Re</i> ∼ <i>O</i>(10<sup>5</sup>)) showed that almost attached flow fields were formed under the propeller slipstream influence. Additionally, it was observed that the <i>C<sub>L</sub></i> fluctuation of the fixed wing increased even when the time-averaged <i>C<sub>L</sub></i> was lower than that of the <i>wing only</i> case.</p>

  • Numerical simulation of elliptic bubble deformation by underwater shock wave

    Aono, J., and Kitamura, K.

    Explosion   33 ( 3 )   159 - 163   2023.12  [Reviewed]

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    Authorship:Last author, Corresponding author   Language:Japanese   Publishing type:Research paper (scientific journal)   Single Work  

  • Aerodynamic Effects of Surface Protuberance Size on Slender-Bodied Supersonic Vehicle

    Nimura, K; Tsutsui, F; Kitamura, K; Nonaka, S

    JOURNAL OF SPACECRAFT AND ROCKETS   61 ( 2 )   355 - 368   2023.10  [Reviewed]

    DOI Web of Science

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    Authorship:Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Joint Work  

  • Effects of Protuberance Size on Side Force Characteristics of Slender Body at Mach 0.7 and 1.3

    Motoki Shogo, Nimura Kazuki, Magara Motoki, Kitamura Keiichi, Nonaka Satoshi

    AEROSPACE TECHNOLOGY JAPAN, THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES   22 ( 0 )   71 - 78   2023.10  [Reviewed]

    DOI CiNii Research

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    Authorship:Corresponding author   Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES   Joint Work  

  • Numerical Analysis on Axial Force Characteristics of Reusable Launch Vehicle at 150-180 & DEG; Angles of Attack

    Mamashita Tomohiro, Muto Tomotaro, Kitamura Keiichi, Nonaka Satoshi

    TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES   66 ( 4 )   118 - 129   2023.7  [Reviewed]

    DOI Web of Science CiNii Research

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    Authorship:Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:一般社団法人 日本航空宇宙学会   Joint Work  

    <p>To investigate the aerodynamic characteristics of the reusable experimental vehicle “Reusable Vehicle-eXperiment (RV-X)” during a return phase (i.e., at 150–180° angles of attack), numerical calculations were performed on both actual-flight and wind-tunnel-test scales. The authors also validated the simulation results through comparing them with the data of corresponding wind tunnel tests. Especially, at an angle of attack of 180°, the results showed that the absolute axial force value |<i>C<sub>A</sub></i>| (i.e., drag working as an aerodynamic brake) under the flight conditions (<i>Re</i> = 9.0 × 10<sup>6</sup>) was approximately 87% smaller than that observed for the wind tunnel conditions (<i>Re</i> = 6.6 × 10<sup>5</sup>). It was discovered that this decrement is caused by a difference between the Reynolds numbers of the wind-tunnel-test and actual-flight scales. A comparison of the visualized flow fields clarified that the flow in the actual-flight scale with the larger Reynolds number does not tend to separate from the vehicle surface. Because of this, the accelerated and expanded flow at the base fillet area of the vehicle formed a significant low-pressure region, which pulled the vehicle in the direction of reducing |<i>C<sub>A</sub></i>| (i.e., decreasing aerodynamic braking).</p>

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Review Papers 【 display / non-display

  • グループ紹介 横浜国立大学空気力学研究室

    北村 圭一

    Explosion   33 ( 3 )   185 - 187   2023.12

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    Authorship:Lead author, Last author, Corresponding author   Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)   Publisher:社団法人 可視化情報学会   Single Work  

  • 空飛ぶクルマを取り巻く環境とその実現に向けた研究開発

    北村 圭一

    高速道路と自動車   65 ( 4 )   7 - 7   2022

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    Authorship:Lead author, Last author, Corresponding author   Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)   Publisher:社団法人 可視化情報学会   Single Work  

  • Development of All Speed Numerical Scheme SLAU

    SHIMA Eiji, KITAMURA Keiichi

    Aeronautical and Space Sciences Japan   69 ( 12 )   337 - 340   2021

    DOI CiNii Research

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (bulletin of university, research institution)   Publisher:THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES   Joint Work  

  • Shockwave and Vortex Visualization Examples at Aerodynamics Laboratory, Yokohama National University

    KITAMURA Keiichi

    Journal of the Visualization Society of Japan   41 ( 162 )   15 - 16   2021

    DOI CiNii Research

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    Authorship:Lead author, Last author, Corresponding author   Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)   Publisher:The Visualization Society of Japan   Single Work  

    <p>  This article introduces visualization examples at Aerodynamics Laboratory, Yokohama National University: 1) Shockwave detection and visualization using edge-detection coined as CEDRIC (Canny-Edge-Detection / Rankine-hugonIot-Conditions unified shock sensor), and 2) vortex visualization by velocity vectors on a semi-transparent cross-section.</p><p>  This article introduces visualization examples at Aerodynamics Laboratory, Yokohama National University: 1) Shockwave detection and visualization using edge-detection coined as CEDRIC (Canny-Edge-Detection / Rankine-hugonIot-Conditions unified shock sensor), and 2) vortex visualization by velocity vectors on a semi-transparent cross-section.</p>

Awards 【 display / non-display

  • The Ichimura Prize in Science for Distinguished Achievement

    2024.3   Ichimura Foundation for New Technology  

    Individual or group name of awards:Keiichi KITAMURA

  • Award for Science and Technology (Research Category), The Commendation for Science and Technology by the Minister of Education, Culture, Sports, Science and Technology

    2022.4   The Ministry of Education, Culture, Sports, Science and Technology - Japan  

    Individual or group name of awards:Eiji SHIMA, Keiichi KITAMURA

  • The Young Scientists' Prize, The Commendation for Science and Technology by the Minister of Education, Culture, Sports, Science and Technology

    2019.4   The Ministry of Education, Culture, Sports, Science and Technology - Japan  

    Individual or group name of awards:Keiichi KITAMURA

  • 令和4年度 横浜国立大学優秀研究者賞 優秀研究賞

    2023.3   横浜国立大学  

    Individual or group name of awards:北村圭一

  • Technical Award, 2020, JSASS (Japan Society for Aeronautical and Space Sciences)

    2021.4   JSASS (Japan Society for Aeronautical and Space Sciences)  

    Individual or group name of awards:Eiji SHIMA, Keiichi KITAMURA

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Grant-in-Aid for Scientific Research 【 display / non-display

  • 解像度5次精度超の効率的な2次精度型圧縮性 流体計算法と複雑流体物理への応用

    2023.4 - 2026.3

    科学研究費補助金  Grant-in-Aid for Scientific Research(B)

    Investigator(s):北村圭一

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    Authorship:Principal investigator  Grant type:Competitive

  • 画像処理と流体力学の融合による衝撃波検知と高精度実用乱流計算

    2022.3 - 2025.3

    Fostering Joint International Research (A)

    Investigator(s):北村圭一

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    Authorship:Principal investigator  Grant type:Competitive

  • 特徴面検出・解像度向上を自動で相互に行うAI 積極融合型の新しい数値流体力学

    2023.4 - 2025.3

    科学研究費補助金 

    Investigator(s):北村圭一

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    Authorship:Principal investigator  Grant type:Competitive

  • 前方流速場nudgeによる衝撃波変調~波面消失原理実証と応用展開

    2021.4 - 2025.3

    科学研究費補助金  Grant-in-Aid for Scientific Research(A)

    Investigator(s):佐宗 章弘

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    Authorship:Coinvestigator(s)  Grant type:Competitive

  • 画像処理と流体力学の融合による衝撃波検知と64倍解像度流体計算

    2019.4 - 2022.3

    科学研究費補助金  Grant-in-Aid for Scientific Research(C)

    Investigator(s):北村圭一

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    Grant type:Competitive

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Other external funds procured 【 display / non-display

  • 空飛ぶクルマの空力設計DXと実機飛行

    2022.3 - 2023.2

    官民による若手研究者発掘支援事業/マッチングサポートフェーズ

    Investigator(s):北村圭一

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    Authorship:Principal investigator 

  • 2024年度 空飛ぶクルマの低速および高速飛行時の非定常空力特性取得補助事業

    2024.4 - 2025.3

    Private Foundations  自転車等機械振興補助金

    Investigator(s):北村圭一

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    Authorship:Principal investigator 

  • 火星飛行機におけるプロペラ後流・主翼干渉流れの解明(継続3年目)

    2023.4 - 2024.3

    東北大学流体科学研究所令和5年度公募共同研究

    Investigator(s):北村圭一、永井大樹

  • 爆発,爆轟の精密シミュレーションに向けた移動衝撃波の数値計算法確立(その2)

    2022.6 - 2023.6

    Private Foundations  公益財団法人 火薬工業技術奨励会 2022年度研究助成

    Investigator(s):北村圭一

  • 火星飛行機におけるプロペラ後流・主翼干渉流れの解明(継続2年目)

    2022.4 - 2023.3

    東北大学流体科学研究所令和4年度公募共同研究

    Investigator(s):北村圭一、永井大樹

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Presentations 【 display / non-display

  • FaSTAR-Moveを用いたeVTOLの空力干渉の数値解析

    鈴木 恵太,坂爪 竣哉,古澤 善克,原 優花,北村圭一(横国大)

    2023年度将来回転翼機研究会/回転翼解析技術交流会  2024.3  日本ヘリコプタ協会

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    Event date: 2024.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京都  

  • Effects of LES/RANS hybrid interface location on oscillating shockwave in transonic buffeting flow

    Kitamura, K., Tsukamoto, Y., Wang, Z.-N., Moller, F.M., and Tucker, P.G.

    Cambridge Unsteady Flow Symposium (CUFS)  2024.3  Cambridge Unsteady Flow Symposium (CUFS)

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    Event date: 2024.3

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Cambridge, UK  

  • マッハ0.7及び1.3におけるリング型形状突起による細長物体への横力低減効果

    二村 和樹, 仲原 宏哉, 峯嶋 航矢, 熊井 響希, 北村 圭一(横国大), 野中 聡(JAXA)

    令和5年度 宇宙航行の力学シンポジウム  2023.12  JAXA宇宙科学研究所

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    Event date: 2023.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:相模原市,宇宙科学研究所  

  • 強い衝撃波・微弱衝撃波を適切に解くMUSCL-THINCハイブリッド解法

    福嶋 岳(名大) , 北村圭一(横国大)

    第37回数値流体力学シンポジウム  2023.12  日本流体力学会

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    Event date: 2023.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋大学  

  • MUSCL and THINC hybrid scheme for strong and very weak shock waves in steady and unsteady flows

    Fukushima, G., and Kitamura, K.

    76th Annual Meeting of the Division of Fluid Dynamics  2023.11  American Physical Society

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    Event date: 2023.11

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Washington, DC  

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Preferred joint research theme 【 display / non-display

  • Fluid Dynamics, Aerodynamics, Computational Fluid Dynamics (CFD)

Past of Collaboration and Commissioned Research 【 display / non-display

  • 低速バフェット現象に対するSAベースのDES解析手法の改善に関する研究(その2)

    Offer organization: 宇宙航空研究開発機構 (JAXA)   Funded Research offered by Enterprises  

    Project Year: 2021.7  -  2022.2 

  • 低速バフェット現象に対するSAベースのDES解析手法の改善に関する研究

    Offer organization: 宇宙航空研究開発機構 (JAXA)   Funded Research offered by Enterprises  

    Project Year: 2020.9  -  2021.3 

  • 非定常数値流束を導入した高解像度DDESによる低速バフェットの解析

    Offer organization: 宇宙航空研究開発機構 (JAXA)   Funded Research offered by Enterprises  

    Project Year: 2019.7  -  2020.3 

  • 領域判別関数を導入した高解像度スキームを用いた低速バフェットの解析

    Offer organization: 宇宙航空研究開発機構 (JAXA)   Funded Research offered by Enterprises  

    Project Year: 2018.6  -  2019.3 

  • 高解像度スキームを用いた低速バフェットの解析

    Offer organization: 宇宙航空研究開発機構 (JAXA)   Funded Research offered by Enterprises  

    Project Year: 2017.6  -  2018.3 

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Charge of on-campus class subject 【 display / non-display

  • 2024   Manufacturing of Thermal and Fluid Systems B

    Graduate school of Engineering Science

  • 2024   Manufacturing of Thermal and Fluid Systems A

    Graduate school of Engineering Science

  • 2024   Design of Thermal and Fluid Systems B

    Graduate school of Engineering Science

  • 2024   Design of Thermal and Fluid Systems A

    Graduate school of Engineering Science

  • 2024   Compressible Flow

    Graduate school of Engineering Science

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Committee Memberships 【 display / non-display

  • (一社)日本流体力学会

    2024.4 - 2026.3  代議員

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    Committee type:Academic society 

  • 35th ISTS

    2023.8 - 2025.7 

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    Committee type:Academic society 

  • 34th ISTS

    2022.7 - 2023.7 

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    Committee type:Academic society 

  • 日本機械学会 宇宙工学部門委員会

    2021.4 - 2023.3  委員

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    Committee type:Academic society 

  • 日本機械学会神奈川ブロック 幹事会

    2021.3 - 2023.2  委員

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    Committee type:Academic society 

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Social Contribution(Extension lecture) 【 display / non-display

  • 探求の階段(テレビ東京/BSテレ東)

    Role(s): Guest, Filming support

    テレビ東京/BSテレ東  探求の階段  2022.2

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    Audience: University students, Graduate students, Teachers, Researchers, Scientific organization, Company, Media, Other

    Type:TV or radio program

    TV取材(出演):工学研究院 北村 圭一准教授
    放送内容:航空機や車、建築など幅広い分野で応用されている「流体力学」についてのインタビューが放送
    放送日時:2022年2月10日(木)22:58~23:06
    2022年2月19日(土)21:55~22:00

  • 招待講演

    Role(s): Lecturer

    日本機械学会 2021年度年次大会 特別行事企画「先端技術フォーラム」F19100 宇宙工学分野における数値解析技術の展開[宇宙工学部門,計算力学部門企画][F191-03]   圧縮性流体計算法の研究と国産ロケット開発への応用  オンライン  2021.9

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    Audience: Graduate students, Researchers, Scientific organization, Company

    Type:Lecture

  • 話題提供

    Role(s): Lecturer

    日本機械学会 RC286「流れの先進的計測・シミュレーション法と流体情報の高度利用に関する研究分科会」  有限体積法における静止衝撃波および移動衝撃波捕獲の現状と課題  オンライン  2021.8

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    Audience: Researchers, Scientific organization, Company

    Type:Seminar, workshop

  • 招待講演

    Role(s): Lecturer

    STEシミュレーション研究会・KDKシンポジウム 合同研究会  衝撃波を安定かつ高精度に解く新しい数値解法  オンライン  2021.3

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    Audience: Graduate students, Researchers, Scientific organization

    Type:Lecture

  • 講演

    Role(s): Lecturer

    公益社団法人 自動車技術会 CFD技術部門委員会  圧縮性流体計算法の研究とモノづくりへの貢献  オンライン  2021.1

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    Audience: Researchers, Company

    Type:Lecture

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Media Coverage 【 display / non-display

  • 探求の階段 #119「空気のチカラで宇宙へ!/北村圭一(横浜国立大学 准教授)」(テレビ東京/BSテレ東)

    テレビ東京/BSテレ東  探求の階段  自身の研究に関するインタビュー内容が放映されました。  2022.2

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    Author:Myself 

    2022年2月10日(木)
    空気のチカラで宇宙へ!/北村圭一(横浜国立大学 准教授)
    目は見えない空気などの流れを見えるようにする。
    その学問を「流体力学」と呼ぶ。その流体力学は航空機や車、建築など幅広い分野で応用されている。
    北村さんは流体力学でロケットや空飛ぶ車を研究する人物。その探究心に迫る。

    (番組Webページより引用)

  • 「新・情報7daysニュースキャスター」(TBSテレビ)

    TBSテレビ  新・情報7daysニュースキャスター  2020.7

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    放送日時:2020年7月11日(土)22:00-
    放送内容:車体後方の剥離渦について解説
    ※TBS.(TBS「Nスタ」,2020年07月13日,においても解説映像が再度使用された.

  • 「スーパーJチャンネル」(テレビ朝日)

    テレビ朝日  スーパーJチャンネル  剥離渦に関する解説内容が紹介されました.  2020.7

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    Author:Myself 

  • 「空飛ぶクルマ」実用化へ 運航ルールや技術開発など議論(NHK)

    NHK  NHK ニュースウォッチ9  2018.8