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2013 Fiscal Year Annual Research Report

境界層外乱れの影響をうけた多重スケール粗面壁乱流の構造と熱輸送機構の解明

Research Project

Project/Area Number 24760133
Research InstitutionNagoya Institute of Technology

Principal Investigator

鈴木 博貴  名古屋工業大学, 工学(系)研究科(研究院), 助教 (10626873)

Keywords乱流 / 壁乱流
Research Abstract

粗面壁乱流の解析結果は,European Turbulence Conference 14において認められた.この成果を踏まえると,高レイノルズ数の場合の解析を行う必要性が指摘された.この指摘を踏まえて,モデル定数がグローバル定数となる最新のSGSモデルをもとに,ダイナミックLESコードを開発した.
粗面壁乱流の数値解析には従来,スタガード直交格子系にもとづいて解析が行われてきた.この手法の特長は,乱流のエネルギーの良好な保存特性を実現できる点にある.一方短所は粗面壁を構成する粗面要素の角の厳密な再現に不向きな点である.この短所はコロケート格子にもとづき曲線格子を用いることで解消されるが,この方法にはエネルギー保存特性に難がある欠点がある.そこで,曲線格子においても良好なエネルギー保存特性を実現する解析コードを開発し,その成果が4th International Conference on Jets, Wakes and Separated Flows (ICJWSF4)において認められた.
本研究は境界層外乱れの影響について注目しており,その影響を考える上で境界層外乱れ自身の性質を把握することは,影響把握に貢献するものといえる.そこで,古くから境界層乱れとして設定される格子乱流および近年その特異な性質が注目されている多重スケール格子乱流について解析を行った.中でも,従来重要と認識されつつもデータ所得の困難さから不足している観点である,大スケールの観点および静圧変動の観点に着目して,解析および考察を行った.これらの成果は,日本機械学会論文集,ICJWSF4および8th International Symposium on Turbulence and Shear Flow Phenomena, およびFluid Dynamics Researchにおいて認められた.

  • Research Products

    (15 results)

All 2014 2013

All Journal Article (9 results) (of which Peer Reviewed: 8 results) Presentation (6 results)

  • [Journal Article] A 3D Navier-Stokes Simulation under Staggered/Collocated Grids with High-Kinetic-Energy-Conservation2014

    • Author(s)
      H. Suzuki, S. Matsuo, M. Watanabe, Y. Hasegawa, and T. Ushijima
    • Journal Title

      Proceedings of Grand Renewable Energy 2014

      Volume: 掲載確定 Pages: 掲載確定

    • Peer Reviewed
  • [Journal Article] Development and Application of an Navier-Stokes Simulation Code with High-Kinetic-Energy-Conservation2014

    • Author(s)
      H. Suzuki, S. Matsuo, Y. Hasegawa, and T. Ushijima
    • Journal Title

      Proceedings of Grand Renewable Energy 2014

      Volume: 掲載確定 Pages: 掲載確定

  • [Journal Article] DNS Study on Pressure Characteristics of Fractal-Generated Turbulence2014

    • Author(s)
      H. Suzuki, K. Nagata, Y. Sakai, T. Hayase, Y. Hasegawa, and T. Ushijima
    • Journal Title

      Proceedings of 4th International Conference on Jets, Wakes and Separated Flows

      Volume: - Pages: Paper No.1109

    • Peer Reviewed
  • [Journal Article] Development and Quantitative Validation of a Numerical Code using Highly Energy-Conservative Scheme2014

    • Author(s)
      M. Watanabe, H. Suzuki, Y. Hasegawa, and T. Ushijima
    • Journal Title

      Proceedings of 4th International Conference on Jets, Wakes and Separated Flows

      Volume: - Pages: Paper No.1170

    • Peer Reviewed
  • [Journal Article] Direct Numerical Simulation of Grid-Generated Turbulence (Analysis on Invariants and Rotta Model)2013

    • Author(s)
      Hiroki SUZUKI; Kouji NAGATA; Yasuhiko SAKAI; Toshiyuki Hayase; Yutaka HASEGAWA; Tatsuo USHIJIMA
    • Journal Title

      Transcations of the JSME Ser. B

      Volume: 70 Pages: 2363-2374

    • Peer Reviewed
  • [Journal Article] Direct numerical simulation of fractal-generated turbulence2013

    • Author(s)
      Hiroki SUZUKI; Kouji NAGATA; Yasuhiko SAKAI; Toshiyuki Hayase; Yutaka HASEGAWA; Tatsuo USHIJIMA
    • Journal Title

      Fluid Dynamics Research

      Volume: 45 Pages: Paper No.061409

    • DOI

      doi:10.1088/0169-5983/45/6/061409

    • Peer Reviewed
  • [Journal Article] An Attempt to Improve Accuracy of Higher-order Statistics and Spectra in Direct Numerical Simulation of Incompressible Wall Turbulence by Using the Compact Schemes for Viscous Terms2013

    • Author(s)
      Hiroki SUZUKI; Kouji NAGATA; Yasuhiko SAKAI; Toshiyuki Hayase; Yutaka HASEGAWA; Tatsuo USHIJIMA
    • Journal Title

      International Journal for Numerical Methods in Fluids

      Volume: 73 Pages: 509-522

    • DOI

      DOI: 10.1002/fld.3810

    • Peer Reviewed
  • [Journal Article] DNS of Channel Flow with Two-scale Surface Roughness on One Wall2013

    • Author(s)
      Hiroki SUZUKI; Richard PERKINS
    • Journal Title

      Proceedings of European Turbulence Conference 14

      Volume: - Pages: Paper No.115

    • Peer Reviewed
  • [Journal Article] DNS on Multiscale-Generated Grid Turbulence Using Classical Grid2013

    • Author(s)
      Hiroki SUZUKI; Kouji NAGATA; Yasuhiko SAKAI; Toshiyuki Hayase; Yutaka HASEGAWA; Tatsuo USHIJIMA
    • Journal Title

      Proceedings of the 8th International Symposium on Turbulence and Shear Flow Phenomena

      Volume: - Pages: Paper No.HOM1E

    • Peer Reviewed
  • [Presentation] Development and Quantitative Validation of a Numerical Code using Highly Energy-Conservative Scheme2013

    • Author(s)
      渡辺雅也
    • Organizer
      4th International Conference on Jets, Wakes and Separated Flows
    • Place of Presentation
      名古屋市
    • Year and Date
      20130917-20130921
  • [Presentation] DNS Study on Pressure Characteristics of Fractal-Generated Turbulence2013

    • Author(s)
      鈴木博貴
    • Organizer
      4th International Conference on Jets, Wakes and Separated Flows
    • Place of Presentation
      名古屋市
    • Year and Date
      20130917-20130921
  • [Presentation] DNS of Channel Flow with Two-scale Surface Roughness on One Wall2013

    • Author(s)
      鈴木博貴
    • Organizer
      European Turbulence Conference 14
    • Place of Presentation
      Lyon市, 仏国
    • Year and Date
      20130901-20130904
  • [Presentation] DNS on Multiscale-Generated Grid Turbulence using a Classical Grid2013

    • Author(s)
      鈴木博貴
    • Organizer
      8th International Symposium on Turbulence and Shear Flow Phenomena
    • Place of Presentation
      Poitiers市, 仏国
    • Year and Date
      20130828-20130830
  • [Presentation] Development and Application of an Navier-Stokes Simulation Code with High-Kinetic-Energy-Conservation2013

    • Author(s)
      鈴木博貴
    • Organizer
      Grand Renewable Energy 2014
    • Place of Presentation
      東京都
    • Year and Date
      20130727-20130801
  • [Presentation] A 3D Navier-Stokes Simulation under Staggered/Collocated Grids with High-Kinetic-Energy-Conservation2013

    • Author(s)
      松尾真之介
    • Organizer
      Grand Renewable Energy 2014
    • Place of Presentation
      東京都
    • Year and Date
      20130727-20130801

URL: 

Published: 2015-05-28  

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