Predictions of turbulent heat transfer in an axisymmetric jet impinging on a heated pedestal

被引:26
作者
Parneix, S [1 ]
Behnia, M
Durbin, PA
机构
[1] Stanford Univ, Ctr Turbulence Res, Stanford, CA 94305 USA
[2] Stanford Univ, Dept Mech Engn, Stanford, CA 94305 USA
来源
JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME | 1999年 / 121卷 / 01期
关键词
computer codes; jets; modeling and scaling; thermal packaging; turbulence;
D O I
10.1115/1.2825964
中图分类号
O414.1 [热力学];
学科分类号
摘要
Cooling or hearing of a flat plate by art impinging jet, due to its many applications has been widely studied. Recent experimental data concerning more complex geometries has become available. In this study, the cooling of a heated pedestal mounted on a flat plate, a configuration which is closer to the one met in some engineering applications (e.g., cooling of electronic components), has been numerically simulated. The normal velocity relaxation turbulence model (V2F model) in art axisymmetric geometry has been adopted. Results have been obtained for a range of jet Reynolds numbers and jet-to-pedestal distances. Comparison of the predicted heat transfer coefficient with experiments has shown a very good agreement For comparison, results have also been obtained with the widely used k-is an element of turbulence model and the agreement with the data is poor.
引用
收藏
页码:43 / 49
页数:7
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