Effect of Jet Position on Cooling an Array of Heated Obstacles

被引:10
|
作者
Maghrabie, Hussein M. [1 ]
Attalla, M. [1 ]
Fawaz, H. E. [2 ]
Khalil, M. [3 ]
机构
[1] South Valley Univ, Fac Engn, Dept Mech Engn, Al Shoban Al Moslemin St, Qena 83521, Egypt
[2] Natl Res Ctr, Dept Mech Engn, 33 El Buhouth St, Cairo 12311, Egypt
[3] Sohag Univ, Fac Engn, Dept Mech Engn, Sohag 82514, Egypt
关键词
heated obstacle; cross flow; jet impingement; jet position; realizable k-epsilon model; average heat transfer coefficient; WALL-MOUNTED CUBE; LARGE-EDDY SIMULATIONS; ELECTRONIC DEVICES; CROSS-FLOW; TURBULENT-FLOW; IMPINGING JET; MATRIX; CONFIGURATION; MODULES; DESIGN;
D O I
10.1115/1.4036788
中图分类号
O414.1 [热力学];
学科分类号
摘要
Numerical study of the effect of jet position (JP) on cooling process of an array of heated obstacles simulating electronic components has been investigated based on realizable k-epsilon model. Jet positions have been changed to impinge each row of obstacles consecutively. The experiments have been achieved at three different values of jet-to-channel Reynolds number ratio, Re-j/Re-c = 1, 2, and 4. In this study, a comparison between two different cooling processes, cross flow only (CF) and jet impingement with cross flow (JICF), has been achieved. The flow structure, heat transfer characteristics, and the pumping power have been investigated for different jet positions. The results show that the jet position affects significantly the flow structure, as well as the heat transfer characteristics. According to the results of average heat transfer coefficient and the pumping power, the more effective jet position for all values of jet-to-channel Reynolds number ratio (1, 2, and 4) is achieved when the jets impinge the third row of obstacles (JP3).
引用
收藏
页数:10
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