Influence of geometric parameters on flow and heat transfer performance of micro-channel heat sinks

被引：239
作者：
Wang, Hongtao [1 ]
Chen, Zhihua [1 ]
Gao, Jianguo [1 ]
机构：
[1] Nanjing Univ Sci Technol, Natl Key Lab Transient Phys, Nanjing 210094, Peoples R China
来源：
APPLIED THERMAL ENGINEERING | 2016年 / 107卷
基金：
中国国家自然科学基金;
关键词：
Microchannel heat sinks; Heat transfer; Pressure drop; Thermal resistance; Heat transfer coefficient; FLUID-FLOW; THERMAL PERFORMANCE; PRESSURE-DROP; ENHANCEMENT; WATER; BIFURCATIONS; NANOFLUIDS; CHANNEL;
D O I：
10.1016/j.applthermaleng.2016.07.039
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Numerical simulations are carried out to investigate the influence of geometric parameters on the flow and heat transfer characteristics of rectangular, trapezoidal and triangular shaped microchannel heat sinks. A good agreement is found between numerical results and experimental data when the variation of water viscosity with temperature is taken into account. The microchannel with high aspect ratio, long wetted perimeter and small hydraulic diameters usually have low thermal resistance and high pressure drop. For the rectangular microchannel, it has the best performance with the aspect ratio among 8.904-11.442. And among three kinds of microchannel, the rectangle has the lowest thermal resistance, followed by trapezoid and triangle microchannel. The channel number also affects the thermal resistance and pressure drop. The increase of channel number reduces the thermal resistance, but at the expense of high pressure drop. Under the condition of the same power consumption, the channel number has an optimum range. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：870 / 879
页数：10
相关论文
共 34 条
[1]   Numerical and experimental investigation of heat transfer and fluid flow characteristics in a micro-scale serpentine channel [J].
Abed, Waleed M. ;
Whalley, Richard D. ;
Dennis, David J. C. ;
Poole, Robert J. .
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2015, 88 :790-802
[2]   Study on the thermal behavior and cooling performance of a nanofluid-cooled microchannel heat sink [J].
Chen, Chien-Hsin ;
Ding, Chang-Yi .
INTERNATIONAL JOURNAL OF THERMAL SCIENCES, 2011, 50 (03) :378-384
[3]   Three-dimensional numerical simulation of heat and fluid flow in noncircular microchannel heat sinks [J].
Chen, Yongping ;
Zhang, Chengbin ;
Shi, Mingheng ;
Wu, Jiafeng .
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER, 2009, 36 (09) :917-920
[4]   Heat transfer and pressure drop in corrugated channels [J].
Elshafei, E. A. M. ;
Awad, M. M. ;
El-Negiry, E. ;
Ali, A. G. .
ENERGY, 2010, 35 (01) :101-110
[5]   Three-dimensional conjugate heat transfer in the microchannel heat sink for electronic packaging [J].
Fedorov, AG ;
Viskanta, R .
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2000, 43 (03) :399-415
[6]   The effect of geometrical parameters on heat transfer characteristics of microchannels heat sink with different shapes [J].
Gunnasegaran, P. ;
Mohammed, H. A. ;
Shuaib, N. H. ;
Saidur, R. .
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER, 2010, 37 (08) :1078-1086
[7]   Influence of channel geometry on the performance of a counter flow microchannel heat exchanger [J].
Hasan, Mushtaq I. ;
Rageb, A. A. ;
Yaghoubi, M. ;
Homayoni, Homayon .
INTERNATIONAL JOURNAL OF THERMAL SCIENCES, 2009, 48 (08) :1607-1618
[8]   Fluid flow in micro-channels [J].
Hetsroni, G ;
Mosyak, A ;
Pogrebnyak, E ;
Yarin, LP .
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2005, 48 (10) :1982-1998
[9]   Enhancement of thermal performance in double-layered microchannel heat sink with nanofluids [J].
Hung, Tu-Chieh ;
Yan, Wei-Mon .
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2012, 55 (11-12) :3225-3238
[10]   Heat transfer enhancement in microchannel heat sinks using nanofluids [J].
Hung, Tu-Chieh ;
Yan, Wei-Mon ;
Wang, Xiao-Dong ;
Chang, Chun-Yen .
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2012, 55 (9-10) :2559-2570
1234