TURBULENT-FLOW IN A CHANNEL WITH TRANSVERSE RIB HEAT-TRANSFER AUGMENTATION

被引:18
作者
CHANG, BH
MILLS, AF
机构
[1] School of Engineering and Applied Science, University of California, Los Angeles
关键词
D O I
10.1016/S0017-9310(05)80056-0
中图分类号
O414.1 [热力学];
学科分类号
摘要
Turbulent flow in a two-dimensional channel with repeated rectangular rib roughness was numerically simulated using a low Reynolds number form of the k-epsilon turbulence model. Friction factors and average Stanton numbers were calculated for various pitch to rib height ratios and bulk Reynolds numbers. Comparisons with experiment were generally adequate, with the predictions of friction superior to those for heat transfer. The effect of variable properties for channel flow was investigated, and the results showed a greater effect for friction than for heat transfer. Comparison with experiment yielded no clear conclusions. The turbulence model was also validated for a related problem, that of flow downstream of an abrupt pipe expansion.
引用
收藏
页码:1459 / 1469
页数:11
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