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LES study of instantaneous flow structure and ventilation mechanism within an urban canopy layer

Research Project

Project/Area Number 23760454
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Hydraulic engineering
Research InstitutionTokyo Institute of Technology

Principal Investigator

INAGAKI Atsushi  東京工業大学, 大学院・理工学研究科, 助教 (80515180)

Project Period (FY) 2011 – 2012
Project Status Completed (Fiscal Year 2012)
Budget Amount *help
¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2011: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywords水理学 / 都市気象学 / LES / 都市キャノピー / 物質拡散 / 乱流構造 / 大気乱流
Research Abstract

Instantaneous flow structure within a cubical canopy was investigated using large eddy simulation (LES). It was designed to simulate the convective boundary layer with flow around the cubical roughness with preserving a similarity law for both the convective mixed layer and the surface layer. The numerical result revealed that there are very large coherent structures of both in velocity and temperature fields within the canopy layer. The size of the structures is much larger than that of the cubes. It was also found that the shapes and locations of these structures are closely related with the TOS above. The upward momentum and heat transport events were clearly related with the TOS developed in the inertial sublayer more than the roughness geometry. Meanwhile, the downward transports are not so correlated with the TOS above but more regulated by the structure of canopy.

Report

(3 results)
  • 2012 Annual Research Report   Final Research Report ( PDF )
  • 2011 Research-status Report
  • Research Products

    (23 results)

All 2012 2011 Other

All Journal Article (6 results) (of which Peer Reviewed: 5 results) Presentation (17 results)

  • [Journal Article] サーモカメラを用いた壁面近傍風速の計測手法の開発2012

    • Author(s)
      稲垣厚至,神田学,久米村秀明
    • Journal Title

      ながれ

      Volume: 31 Pages: 491-493

    • Related Report
      2012 Annual Research Report 2012 Final Research Report
  • [Journal Article] Large eddy simulation coherent flow structures within a cubicalcanopy.2012

    • Author(s)
      Inagaki, A., Castillo, M. C., Yamashita, Y., Kanda, M. and Takimoto, H.
    • Journal Title

      Boundary-Layer Meteorology

      Volume: 142(2) Issue: 2 Pages: 207-222

    • DOI

      10.1007/s10546-011-9671-8

    • Related Report
      2012 Final Research Report 2011 Research-status Report
    • Peer Reviewed
  • [Journal Article] 神田学:3次元建物GISを用いたLESによる東京街区の流体力学的パラメタリゼーション2012

    • Author(s)
      宮本崇史,稲垣厚至,神田学
    • Journal Title

      水工学論文集

      Volume: 第56巻

    • Related Report
      2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] 神田学:熱画像風速測定法(TIV)の開発と建物壁面への応用2012

    • Author(s)
      久米村秀明,稲垣厚至,小野村史穂,瀧本浩史
    • Journal Title

      水工学論文集

      Volume: 第56巻 Pages: 1753-1758

    • Related Report
      2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] 3次元建物GISを用いたLESによる東京街区の流体力学的パラメタリゼーション2012

    • Author(s)
      宮本崇史,稲垣厚至,神田学
    • Journal Title

      土木学会水工学論文集

      Volume: 56

    • NAID

      120006582167

    • Related Report
      2011 Research-status Report
    • Peer Reviewed
  • [Journal Article] 熱画像風速測定法(TIV)の開発と建物壁面への応用2012

    • Author(s)
      久米村秀明,稲垣厚至,小野村史穂,瀧本浩史,神田学
    • Journal Title

      土木学会水工学論文集

      Volume: 56

    • NAID

      130004557935

    • Related Report
      2011 Research-status Report
    • Peer Reviewed
  • [Presentation] H.:Measurement of velocity distribution near a building wall using a time-sequential thermography2012

    • Author(s)
      Inagaki,A.,Kanda,M.,Onomura,S.,Kumemura
    • Organizer
      Proceedings of the 8th international conference for urban climate
    • Year and Date
      2012-06-10
    • Related Report
      2012 Final Research Report
  • [Presentation] 神田学:LESを用いた都市地表面のフィードバックパラメ タリゼーション2012

    • Author(s)
      稲垣厚至,宮本崇史
    • Organizer
      日本流体力学会年会2012
    • Place of Presentation
      高知大学
    • Related Report
      2012 Final Research Report
  • [Presentation] 神田学:サーモカメラを用いた壁面近傍風速の測風手法の開発2012

    • Author(s)
      稲垣厚至,久米村秀明
    • Organizer
      日本流体力学会年会2012
    • Place of Presentation
      高知大学
    • Related Report
      2012 Final Research Report
  • [Presentation] T.New Aerodynamic Parameterization for Real Urban Surfaces derived from LES2012

    • Author(s)
      Kanda,M.,Inagaki,A.,Miyamoto
    • Organizer
      Proceedings of the 8th international conference for urban climate
    • Related Report
      2012 Final Research Report
  • [Presentation] 神田学:サーモカメラを用いた二次元速度場の同定手法2012

    • Author(s)
      稲垣厚至,久米村秀明
    • Organizer
      日本気象学会2012年春季大会
    • Place of Presentation
      20120526-28
    • Related Report
      2012 Final Research Report
  • [Presentation] 神田学:実都市幾何形状を考慮した都市境界層のLarge Eddy Simulation2012

    • Author(s)
      渡邉修,稲垣厚至
    • Organizer
      日本気象学会2012年春季大会
    • Related Report
      2012 Final Research Report
  • [Presentation] LESを用いた都市地表面のフィードバックパラメタリゼーション2012

    • Author(s)
      稲垣厚至
    • Organizer
      日本流体力学会年会2012
    • Place of Presentation
      高知大学
    • Related Report
      2012 Annual Research Report
  • [Presentation] サーモカメラを用いた壁面近傍風速の測風手法の開発2012

    • Author(s)
      稲垣厚至
    • Organizer
      日本流体力学会年会2012
    • Place of Presentation
      高知大学
    • Related Report
      2012 Annual Research Report
  • [Presentation] Measurement of velocity distribution near a building wall using a time-sequential thermography2012

    • Author(s)
      Inagaki, A.
    • Organizer
      8th international conference for urban climate
    • Place of Presentation
      Dublin, Ireland
    • Related Report
      2012 Annual Research Report
  • [Presentation] New Aerodynamic Parameterization for Real Urban Surfaces derived from LES2012

    • Author(s)
      Inagaki, A.
    • Organizer
      8th international conference for urban climate
    • Place of Presentation
      Dublin, Ireland
    • Related Report
      2012 Annual Research Report
  • [Presentation] サーモカメラを用いた二次元速度場の同定手法2012

    • Author(s)
      稲垣厚至
    • Organizer
      日本気象学会2012年春季大会
    • Place of Presentation
      つくば
    • Related Report
      2012 Annual Research Report
  • [Presentation] M.Coherent structure of turbulence within the atmospheric surface layer over an array cubes2011

    • Author(s)
      Inagaki,A.and Kanda
    • Organizer
      Coherent Flow Structuresin Geophysical Flows at Earth's Surface, Simon Fraser University Vancouver Canada
    • Related Report
      2012 Final Research Report
  • [Presentation] Coherent structure of turbulence within the atmospheric surface layer over an array cubes2011

    • Author(s)
      Inagaki, A. and Kanda, M.
    • Organizer
      Coherent Flow Structures in Geophysical Flows at Earth’s Surface
    • Place of Presentation
      Simon Fraser University (Vancouver, Canada)
    • Related Report
      2011 Research-status Report
  • [Presentation] LESを用いた都市キャノピー層乱流の空間分布構造に関する検討2011

    • Author(s)
      稲垣厚至,神田学,Castillo MCL
    • Organizer
      日本地球惑星科学連合2011年大会
    • Place of Presentation
      幕張メッセ(千葉)
    • Related Report
      2011 Research-status Report
  • [Presentation] 低周波変動する流量下での都市接地境界層の数値解析2011

    • Author(s)
      稲垣厚至,神田学
    • Organizer
      日本気象学会2011年春季大会
    • Place of Presentation
      国立オリンピック記念青少年総合センター(東京)
    • Related Report
      2011 Research-status Report
  • [Presentation] LESを用いた都市気象モデルのためのフィードバックパラメタリゼーション2011

    • Author(s)
      宮本崇史,稲垣厚至,神田学
    • Organizer
      地球環境シンポジウム
    • Place of Presentation
      茨城大学水戸キャンパス(茨城)
    • Related Report
      2011 Research-status Report
  • [Presentation] 神田学:低周波変動する流量下での都市接地境界層の数値解析

    • Author(s)
      稲垣厚至
    • Organizer
      日本気象学会2011年春季大会
    • Related Report
      2012 Final Research Report

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Published: 2011-08-05   Modified: 2019-07-29  

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