日本機械学会論文集 B編
Online ISSN : 1884-8346
Print ISSN : 0387-5016
平面上突起物まわりの二次元非定常流れと熱伝達の数値解析
太田 照和中島 円柳岡 英樹
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1998 年 64 巻 617 号 p. 226-231

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The present paper shows a numerical analysis of two-dimensional unsteady separated and reattached flow and heat transfer around a rectangular cylinder located on a wall in a channel with two parallel walls. The Reynolds number ranges from 100 to 1000. For Re≤300, the flow is found to be steady. For Re=400∼1000, the separated shear layer becomes unstable accompanying the formation of spanwise vortices, and in a range of Re≥500, the reattachment length steeply decreases as Re increases. These vortices grow behind a cylinder and are shed almost periodically. The details of the local heat transfer characteristics along with the flow behaviors are clarified.

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