S0506-2-5 リスケール・リサイクル法を用いた平板乱流境界層のDNS([0506-2]乱流における運動量,熱,物質の輸送現象(2))
詳細
Direct numerical simulations of a zero-pressure gradient turbulent boundary layer have been performed in the range Re_θ=300〜1250 using the rescaling-recycling method where Re_θ is the Reynolds number based on the free stream velocity and the momentum thickness. In the present study, we report results on the effects of the recycling location on both turbulence statistics and structures. Also, a comparison with other numerical methods (viz. the fringe and passing wake methods) is made. It is shown that the present turbulence statistics are close to those obtained from the fringe method, whilst there is some discrepancy in results between the rescaling-recycling method and the passing wake method at low Reynolds numbers.
