Experimental and numerical investigations of heat transfer and flow characteristics of cross-cut heat sinks

被引：42

作者：

Chingulpitak, Sakkarin ^{[1
,2
]}

Chimres, Nares ^{[1
]}

Nilpueng, Kitti ^{[3
]}

Wongwises, Somchai ^{[1
]}

机构：

[1] King Mongkuts Univ Technol Thonburi, Dept Mech Engn, Fluid Mech Thermal Engn & Multiphase Flow Res Lab, Bangkok 10140, Thailand

[2] King Mongkuts Univ Technol Thonburi, Joint Grad Sch Energy & Environm, Bangkok 10140, Thailand

[3] King Mongkuts Univ Technol North Bangkok, Coll Ind Technol, Dept Power Engn Technol, Res Ctr Combust Technol & Alternat Energy CTAE, Bangkok 10800, Thailand

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2016年 / 102卷

关键词：

Heat sink; Parallel flow; Cross cut; Plate fin; Forced convection; GAS-LIQUID FLOW; PATTERN MAPS; FIN ARRAY; PERFORMANCE; CHANNELS; BYPASS; SHIELD;

D O I：

10.1016/j.ijheatmasstransfer.2016.05.098

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

This study aims to experimentally and numerically investigate the heat transfer and flow characteristics of plate-fin and cross-cut heat sinks. The accuracy of the measured data is verified by comparing them with the exiting correlations. In the case of the cross-cut heat sink, the effects of cross-cut lengths (L-c) and number of cross-cuts (N-c) are presented. The experimental results show that the cross-cut heat sink with L-c = 1.5 mm gives the lowest thermal resistance. In the case of a numerical study, the numerical results are validated by comparing them with the measured data. The comparison results show that the present model gives reasonable agreement with the measured data. Consequently, the present model is used to find the optimal length and number of cross-cuts. From the numerical results, it is found that the thermal resistance of a cross-cut heat sink with L-c = 1.5 mm and N-c = 6 is 16.2% lower than that of a plate-fin heat sink at the same pumping power. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：142 / 153

页数：12

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