Optimum thermal design of interrupted microchannel heat sink with rectangular ribs in the transverse microchambers
Optimum thermal design of interrupted microchannel heat sink with rectangular ribs in the transverse microchambers
复制标题
横向微腔矩形肋间断微通道散热器的优化热设计
DOI：
10.1016/j.applthermaleng.2012.10.037
复制
发表时间：
2013-03-01
影响因子：
6.4
通讯作者：
Qi, Jingzhi
中科院分区：
文献类型：
--
作者：
Chai, Lei;Xia, Guodong;Qi, Jingzhi
建立了间断式微通道热沉的三维数值模型，研究了横向微腔中矩形肋片尺寸和位置对热沉压降和传热特性的影响。对于优化分析的第一部分，肋的长度和宽度被选为几何变量，以找到它们的最佳尺寸。对于本分析的第二部分，两个布置变量包括平行微通道到肋排的距离和两个相邻横向微室之间的间距。此外，流体流动和传热机制的新提出的微通道热沉进行了分析。最后，基于热增强因子性能图，从原则上得到了矩形肋的最佳尺寸和位置参数。(C)2012爱思唯尔有限公司保留所有权利。
A three-dimensional numerical model of the interrupted microchannel heat sink is presented to study the effects of pressure drop and heat transfer characteristics due to various dimensions and positions of rectangular ribs in the transverse microchambers. For the first part of the optimum analysis, the rib length and width are chosen as the geometry variables to find their optimum dimensions. As to the second part of the present analysis, two arrangement variables including the distance from the parallel microchannels to the rib row and the space between two adjoining transverse microchambers. In addition, the fluid flow and heat transfer mechanisms of the newly proposed microchannel heat sink are analyzed. Finally, based on the thermal enhancement factor performance maps, the optimal dimension and position parameters of the rectangular ribs are obtained in principle. (C) 2012 Elsevier Ltd. All rights reserved.