DNS of three-dimensional unsteady separated flow and heat transfer in a sudden-expansion channel

被引：0

作者：

Yoshikawa, Hiroyuki ^{[1
]}

Ishikawa, Kimitake ^{[1
]}

Ota, Terukazu ^{[1
]}

机构：

[1] Tohoku Univ, Dept Mech Syst & Design, Sendai, Miyagi 9808579, Japan

来源：

HT2005: Proceedings of the ASME Summer Heat Transfer Conference 2005, Vol 3 | 2005年

关键词：

D O I：

10.1115/HT2005-72176

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Numerical results of a three-dimensional unsteady separated flow and heat transfer in a sudden expansion rectangular channel are presented. A direct numerical simulation methodology was employed in the calculations using the finite difference method. Treated in the present study is a rectangular channel of aspect ratio AR=4.0 and expansion ratio ER=2.5 in a Reynolds number range from 200 to 1000. It is found that the flow becomes unsteady at Re=400 and severely complicated at Re=500 to 1000. The heat transfer characteristics are presented and discussed in relation to the flow ones.

引用

页码：459 / 467

页数：9

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