Numerical simulation of Gas Diffusion by using the RIAM-COMPACT : Part. 1 The Case of an Unstable Condition

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  • Uchida Takanori
    Research Institute for Applied Mechanics, Kyushu University
  • Oya Yuji
    Research Institute for Applied Mechanics, Kyushu University

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  • 風況シミュレータRIAM-COMPACTによる拡散場シミュレーション : その1.不安定時の場合
  • フウキョウシミュレータ RIAM COMPACT ニ ヨル カクサンバ シミュレーション ソノ 1 フアン テイジ ノ バアイ

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We are developing the numerical model called the RIAM-COMPACT (Research Institute for Applied Mechanics, Kyushu University, Computational Prediction of Airflow over Complex Terrain). The object domain of this numerical model is from several m to several km, and can predict airflow over complex terrain with high precision. In this paper, the RIAM-COMPACT was applied to gas diffusion over an isolated three-dimensional hill and complex terrain under neutral and unstable conditions. In addition, the fumigation process was discussed. Typical characteristics were observed in the numerical results.

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