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Study on wall model for LES based on coherent structures in turbulence

Research Project

Project/Area Number 20760119
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Fluid engineering
Research InstitutionKeio University

Principal Investigator

KOBAYASHI Hiromichi  Keio University, 法学部, 教授 (60317336)

Project Period (FY) 2008 – 2009
Project Status Completed (Fiscal Year 2009)
Budget Amount *help
¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2009: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2008: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Keywords流体 / 計算物理 / 流体工学 / 数値流体力学 / 乱流モデル / LES / コヒーレント構造
Research Abstract

In LES of turbulence simulation, investigated were the statistical properties of a coherent structure function, which shows an eddy structure and is a normalized second invariant of velocity gradient tensor. It was found that for turbulent channel flows as well as homogeneous isotropic turbulence, the average, the variance, and pdf of the function are independent of Reynolds number, depend on the distance from a wall, and is available as a variable for a wall model.

Report

(3 results)
  • 2009 Annual Research Report   Final Research Report ( PDF )
  • 2008 Annual Research Report
  • Research Products

    (13 results)

All 2010 2009 2008 Other

All Presentation (10 results) Remarks (3 results)

  • [Presentation] Large eddy simulation based on the turbulence structure2010

    • Author(s)
      H. Kobayashi
    • Organizer
      International Conference on Computational & Experimental Engineering and Sciences 2010
    • Place of Presentation
      ラスベガス(米国)
    • Year and Date
      2010-03-28
    • Related Report
      2009 Final Research Report
  • [Presentation] Large eddy simulation of MHD turbulent duct flows2010

    • Author(s)
      H.Kobayashi
    • Organizer
      International Conference on Computational & Experimental Engineering and Sciences 2010
    • Place of Presentation
      ラスベガス(米国)
    • Year and Date
      2010-03-28
    • Related Report
      2009 Annual Research Report
  • [Presentation] LESにおける局所空間相関を高めたコヒーレント構造モデル2009

    • Author(s)
      小林宏充
    • Organizer
      日本物理学会
    • Place of Presentation
      熊本大学
    • Year and Date
      2009-09-28
    • Related Report
      2009 Final Research Report
  • [Presentation] LESにおける局所空間相関を高めたコヒーレント構造モデル2009

    • Author(s)
      小林宏充
    • Organizer
      日本物理学会
    • Place of Presentation
      熊本大学(熊本県)
    • Year and Date
      2009-09-28
    • Related Report
      2009 Annual Research Report
  • [Presentation] Large eddy simulation of MHD turbulent duct flows2009

    • Author(s)
      H.Kobayashi
    • Organizer
      17th International Conference on MHD Energy Conversion
    • Place of Presentation
      湘南国際村(神奈川県)
    • Year and Date
      2009-09-16
    • Related Report
      2009 Annual Research Report
  • [Presentation] Statistical properties of a coherent structure function for homogeneous isotropic turbulence and turbulent channel flows2009

    • Author(s)
      H. Kobayashi, Y. Tominaga, T. Kubota, M. Tanahashi, T. Miyauchi
    • Organizer
      6th Turbulence and Shear Flow Phenomena
    • Place of Presentation
      ソウル国立大学(韓国)
    • Year and Date
      2009-06-22
    • Related Report
      2009 Annual Research Report 2009 Final Research Report
  • [Presentation] 一様等方性乱流およびチャネル乱流におけるコヒーレント構造関数の統計的特性2008

    • Author(s)
      小林宏充、冨永泰裕、窪田泰助、店橋護、宮内敏雄
    • Organizer
      第22回数値流体力学シンポジウム
    • Place of Presentation
      東京
    • Year and Date
      2008-12-17
    • Related Report
      2009 Final Research Report 2008 Annual Research Report
  • [Presentation] Statistical properties for homogeneous isotropic turbulence and turbulent channel flows using a coherent structure function2008

    • Author(s)
      H. Kobayashi, Y. Tominaga, T. Kubota, M. Tanahashi, T. Miyauchi
    • Organizer
      61st Annual Meeting of Division of Fluid Dynamics of The American Physical Society
    • Place of Presentation
      サンアントニオ(米国)
    • Year and Date
      2008-11-23
    • Related Report
      2009 Final Research Report
  • [Presentation] Statistical properties for homogeneous isotropic turbulence and turbulent channel flows using a coherent structure function2008

    • Author(s)
      H. Kobayashi, Y. Tominaga, T. Kubota, M. Tanahashi, T. Miyauchi
    • Organizer
      61st Annual Meeting of Division of Fluid Dynamics of The American Physical Society
    • Place of Presentation
      San Antonio, USA
    • Year and Date
      2008-11-23
    • Related Report
      2008 Annual Research Report
  • [Presentation] コヒーレント構造に基づくLES壁モデルの予備的検討2008

    • Author(s)
      小林宏充、冨永泰裕、窪田泰助、店橋護、宮内敏雄
    • Organizer
      流体力学会年会2008
    • Place of Presentation
      神戸
    • Year and Date
      2008-09-07
    • Related Report
      2009 Final Research Report 2008 Annual Research Report
  • [Remarks]

    • URL

      http://k-ris.keio.ac.jp/Profiles/0040/0007193/pblc1.html

    • Related Report
      2009 Final Research Report
  • [Remarks]

    • URL

      http://k-ris.keio.ac.jp/Profiles/0040/0007193/pblcl.html

    • Related Report
      2009 Annual Research Report
  • [Remarks]

    • URL

      http://k-ris.keio.ac.jp/Profiles/0040/0007193/pblcl.html

    • Related Report
      2008 Annual Research Report

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Published: 2008-04-01   Modified: 2016-04-21  

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