G050042 断熱壁を持つ圧縮性チャネル乱流での圧縮性一方程式型SGSモデルに対するアプリオリテスト([G05004]流体工学部門一般セッション(4):圧縮性・超音速流)

Abstract

A priori test of the one-equation subgrid-scale (SGS) model for turbulent compressible flows with the coherent structure model function proposed by Kobayashi is performed by the direct numerical simulation (DNS) data for the turbulent compressible channel flow with the isothermal and adiabatic walls. As a result, the correlation between the SGS model and filtered DNS data is poor. However, the model expressions for the GS stress and flux, SGS temperature-dilatation terms reproduce the filtered DNS result. Near the wall, it is found that the SGS stress-strain term is effective.