剥離再付着を伴う乱流境界層熱伝達の数値計算(乱流の予測とモデリング(2),一般講演)

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This paper presents observations and investigations of the turbulent heat-transfer in boundary layers over a 2-dimensional (2D) hill which causes the flow separation and reattachment by means of direct numerical simulation (DNS). In order to observe effects of 2D hill for the turbulent heat-transfer in boundary layer, various heights and widths of 2D hill are arranged in DNS. Also, Reynolds number based on the inlet momentum thickness and free stream velocity is changed so as to investigate Reynolds number effect. The results of DNS reveal the turbulent statistics, characteristics and structures of turbulent heat-transfer in boundary layers over a 2D hill, i.e., the detailed phenomena of turbulent heat-transfer in boundary layer with separation and reattachment are obviously demonstrated.
2010-09-09