火災現象のラージエディシミュレーションにおけるサブグリッドスケールモデルの比較 Comparison of Subgrid Scale Models in Large-Eddy Simulation of Fire Dynamics

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This paper evaluates the subgrid scale (SGS) models of Large-Eddy Simulation (LES) in the Fire Dynamics Simulator (FDS), which is the Computational Fluid Dynamics (CFD) code developed at the National Institute of Standards and Technology (KIST) for practical use. LES results of three SGS models (Smagorinsky model, Structure-Function model and WALE model) are compared to fire experimental data of fully developed flow fields in a compartment with an opening. On the other hand, the influence of the three SGS models on transient flow fields at an initial stage of compartment fire phenomena was investigated in terms of time evolution of the temperature by a heat detector model. Further, it is employed to study the effect of the SGS models on unsteady flow fields with simple harmonic oscillation, which is used as a very simplified model of ship rolling motion. From the numerical simulations, it is found that there is no critical difference between the results by the above SGS models. This leads to the conclusion that the Smagorinsky model, which is adopted in FDS by default, works well in practical fire dynamics simulations though it is a primitive SGS model in comparison with the other two improved models.

収録刊行物

  • Marine engineering : journal of the Japan Institution of Marine Engineering = マリンエンジニアリング : 日本マリンエンジニアリング学会誌  

    Marine engineering : journal of the Japan Institution of Marine Engineering = マリンエンジニアリング : 日本マリンエンジニアリング学会誌 41(4), 611-617, 2006-07-01 

    The Japan Institute of Marine Engineering

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各種コード

  • NII論文ID(NAID)
    10018055110
  • NII書誌ID(NCID)
    AA11505252
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    13461427
  • NDL 記事登録ID
    8027320
  • NDL 雑誌分類
    ZN24(科学技術--運輸工学--船舶)
  • NDL 請求記号
    Z16-747
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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