C113 壁面及び自由表面での乱流熱輸送における秩序構造の効果

概要

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The role of coherent structures responsible for heat transfer at near-wall and free-surface turbulent boundary layers has been investigate in this study. Databases fromdirect numerical simulation of fully developed free surface turbulence at Re=150,based on the wall shear velocity and channel height, are used to identify coherent structures intensifying heat transfer rate at both boundary layers. The results of this study reveal that the effect of boundary condition on formation of coherent structures is criticaland special treatment for the free-surface turbulent boundary layer is required to model turbulent heat transfer across the free surface.
日本流体力学会の論文
2000-07-25