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2010 Fiscal Year Annual Research Report

VCADに基づいた高精度流体計算手法の研究

Research Project

Project/Area Number 20560175
Research InstitutionThe Institute of Physical and Chemical Research

Principal Investigator

雷 康斌  独立行政法人理化学研究所, VCADモデリングチーム, 上級研究員 (80392174)

KeywordsVCADシステム / 数値シミュレーション / 非圧縮性粘性熱流体 / Computational Fluid Dynamics / Cut Cell Method / Kitta Cubeモデル / V-Flow / V-DSMC
Research Abstract

本研究の目的は、VCADシステムにおけるKitta CubeおよびOctree構造データを直接用いた、格子作成が不用となる3次元非圧縮性粘性流体の新しいシミュレーション技術を確立し、形状記述性とロバスト性に優れた(VCADシステムに対応した)高精度流体解析ソフトウェアを開発することである。平成22年度には都市建築物の風環境および災害インパクトを評価するCFDシミュレーション手法を構築するため、1.都市建築物をシミュレーションするための格子生成技術、2.市街地環境ファクターを考慮した乱流モデル、3.竜巻や旋回強風を生成するための数値境界条件、4.都市建築物の風環境を評価する方法などの要素技術をCFDソフトウェアV-Flow3Dに取り入れるように開発してきた。本研究では、1.VCADに基づくカットセル直交格子を使うことにより、都市高層ビル周りの強風災害を評価するための高品質な格子が自動的に生成できること。2.これまで考慮できなかった接地境界層の地表面粗度を考慮し、ダイナミックLESによる非定常流れ場の計算を行い、強風災害のインパクトを精度よく評価できること。3.市街地における旋回風による災害やウォーク汚染を評価し、人々の健康を守るのに貢献できることに関して、一定の研究成果が得られた。また、VCADシステムに基づくマルチスケール流体解析技術の開発に関して、平成21年度の研究成果であるV-DSMC2Dの開発を踏まえ、希薄気体予測に適応する3次元ソフトウェアV-DSMC3Dを開発した。開発したV-Flow3D及びV-DSMC3D等のソフトウェアを用いて、都市のビル風環境の数値シミュレーションや、MEMS部品の性能評価に試み、環境保全問題および製品性能評価に適用してみた。V-Flow3D Version1.0ソフトウェアが2010年10月8日に、V-DSMC2D Version1.0-ソフトウェアが2010年2月16日に理化学研究所のWebページを通して一般公開されていた。以上の研究成果が10回の学会講演会で発表し、一部の研究成果が学術雑誌に投稿し、6篇の査読つきの論文が掲載された。

  • Research Products

    (17 results)

All 2011 2010 Other

All Journal Article (6 results) (of which Peer Reviewed: 6 results) Presentation (10 results) Remarks (1 results)

  • [Journal Article] A finite volume method for solving the Navier-Stokes equations on three-dimensional Cartesian cut cells2011

    • Author(s)
      Xilian Luo, Zhaolin Gu, Kangbin Lei, Sheng Wang, Kiwamu Kase
    • Journal Title

      International Journal for Numerical Methods in Fluids

      Volume: (In press)

    • Peer Reviewed
  • [Journal Article] Large eddy simulation of flow in a street canyon with planting under various atmospheric instability conditions2010

    • Author(s)
      Gu Zhaolin, Zhang Yunwei, Lei Kangbin
    • Journal Title

      SCIENCE CHINA, Technological Sciences

      Volume: 53-7 Pages: 1928-1937

    • Peer Reviewed
  • [Journal Article] A novel Cartesian cut cell solver for incompressible viscous flow in irregular domains2010

    • Author(s)
      Xilian Luo, Kangbin Lei, Zhaolin Gu, Sheng Wang, Kiwamu Kase
    • Journal Title

      International Journal for Numerical Methods in Fluids

      Pages: doi:10.1002/fld.2347

    • Peer Reviewed
  • [Journal Article] An efficient algorithm for detecting particle contact in non-uniform size particulate system2010

    • Author(s)
      Luyi Lu, Zhaolin Gu, Kangbin Lei, Sheng Wang, Kiwamu Kase
    • Journal Title

      Particuology

      Volume: 8-2 Pages: 127-132

    • Peer Reviewed
  • [Journal Article] A novel discretization method for the incompressible N-S quations on three-dimensional Cartesian cut cell method2010

    • Author(s)
      Luo Xilian, Gu Zhaolin, Lei Kangbin, Kase Kiwamu
    • Journal Title

      Journal of Xi'an Jiaotong University

      Volume: 44-5 Pages: 15-20

    • Peer Reviewed
  • [Journal Article] Effect of boundary conditions on the performances of micro-gas bearings with different temperatures2010

    • Author(s)
      Sheng Wang, Kangbin Lei, Xilian Luo, Zhaolin Gu, Kiwamu Kase
    • Journal Title

      IOP Conference Series : Materials Science and Engineering

      Pages: doi:10.1088/1757-899X/10/1/012179

    • Peer Reviewed
  • [Presentation] Wind Environment Simulation using V-Flow3D2011

    • Author(s)
      Kangbin LEI, Xilian LUO, Masataka Fukui
    • Organizer
      RIKEN Symposium on VCAD System Research 2010-The Future of VCAD
    • Place of Presentation
      RIKEN, Wako, Japan
    • Year and Date
      20110302-20110303
  • [Presentation] Development of Three-Dimensional DSMC under VCAD2011

    • Author(s)
      Sheng WANG, Xilian LUO, Kangbin LEI, Kiwamu KASE
    • Organizer
      RIKEN Symposium on VCAD System Research 2010-The Future of VCAD
    • Place of Presentation
      RIKEN, Wako, Japan
    • Year and Date
      20110302-20110303
  • [Presentation] Numerical simulation of the deposition pattern in electrostatic spray deposition method2011

    • Author(s)
      Wei WEI, Sheng WANG, Kangbin LEI, Kiwamu KASE
    • Organizer
      RIKEN Symposium on VCAD System Research 2010-The Future of VCAD
    • Place of Presentation
      RIKEN, Wako, Japan
    • Year and Date
      20110302-20110303
  • [Presentation] A novel Cartesian cut cell method for incompressible viscous flows in irregular domains2010

    • Author(s)
      Kangbin Lei, Xilian Luo, Sheng Wang, Zhaolin Gu, Kiwamu Kase
    • Organizer
      9th World Congress on Computational Mechanics and 4th Asian Pacific Congress on Computational Mechanics, Keynote Speech
    • Place of Presentation
      Sydney, Australia
    • Year and Date
      20100719-20100723
  • [Presentation] Effect of boundary conditions on the performances of micro-gas bearings with different temperatures2010

    • Author(s)
      Sheng Wang, Kangbin Lei, Xilian Luo, Zhaolin Gu, Kiwamu Kase
    • Organizer
      9th World Congress on Computational Mechanics and 4th Asian Pacific Congress on Computational Mechanics
    • Place of Presentation
      Sydney, Australia
    • Year and Date
      20100719-20100723
  • [Presentation] Viscous micropump simulation by particle/continuum methods2010

    • Author(s)
      Sheng Wang, Xilian Luo, Kangbin Lei, Zhaolin Gu, Kiwamu Kase
    • Organizer
      4th International Conference on Thermal Process Modeling and Computer Simulations
    • Place of Presentation
      Shanghai, China
    • Year and Date
      20100531-20100602
  • [Presentation] Flows analysis software V-Flow3D based on VCAD directly2010

    • Author(s)
      Kangbin Lei, Xilian Luo, Noboru Imai, Sheng Wang, Yoshinori Teshima, Kiwamu Kase
    • Organizer
      Conference on Computational Engineering and Science (Japan Society for Computational Engineering and Science)
    • Place of Presentation
      Kyushu University, Japan
    • Year and Date
      20100526-20100528
  • [Presentation] A novel Cartesian cut cell method for incompressible viscous flows in irregular domains2010

    • Author(s)
      Sheng Wang, Kangbin Lei, Xilian Luo, Kiwamu Kase
    • Organizer
      RIKEN Symposium on VCAD System Research 2009
    • Place of Presentation
      RIKEN, Wako, Japan
    • Year and Date
      20100304-20100305
  • [Presentation] Development of V-Flow3D using unstructured grid2010

    • Author(s)
      Kangbin Lei, Xilian Luo, Noboru Imai, Sheng Wang, Kiwamu Kase
    • Organizer
      RIKEN Symposium on VCAD System Research 2009
    • Place of Presentation
      RIKEN, Wako, Japan
    • Year and Date
      20100304-20100305
  • [Presentation] Spray area control of electrospray deposition technique2010

    • Author(s)
      Hirotaka Asaki, Takeshi Fukuda, Lei Kangbin, Wang Sheng, Kiwamu Kase, Zentarou Honda, Norihiko Kamata, Jungmyoung Ju, Yutaka Yamagata
    • Organizer
      IEICE Technical Report, OME2010-46, (電子情報通信学会研究会)
    • Place of Presentation
      NTT Musashino R&D Center
    • Year and Date
      2010-10-22
  • [Remarks]

    • URL

      http://www.riken.jp/vcad/

URL: 

Published: 2012-07-19  

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