<u_i'u_j'>輸送方程式中の圧力歪相関項, wall reflection項, 乱流拡散項に関する各種モデルの評価 : 応力方程式モデルによる立方体周辺気流解析

抄録

Turbulent flow around a surface-mounted cube was analyzed by DSM (Differential Stress Model). This paper reports on the results of seven cases of DSM computations, using four different models for Φ_<ij>, two different models for Φ^ω_<ij> and two different models for D_<ij>. The accuracy of these computations was examined by comparing them with the results of wind tunnel experiment and LES. The following matters are clarified. The Craft and Launder (CL) model for Φ^ω_<ij(2)> improves the accuracy for predicting the k value in the area near the upwind corner of cube in comparison with the case in which Φ^ω_<ij(2)> is not included. The Mellor-Herring (MH) model for D_<ij> reproduces anisotropy of <u_i'u_j'> better than does the Daly-Harlow (DH) model.