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
收藏
页码：459 / 467
页数：9
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