Effects of thermal property variations on the liquid flow and heat transfer in microchannel heat sinks

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	Effects of thermal property variations on the liquid flow and heat transfer in microchannel heat sinks
	Li, Zhigang ; Huai, Xiulan ; Tao, Yujia ; Chen, Huanzhuo
刊名	APPLIED THERMAL ENGINEERING
	2007-12-01
卷号	27 期号:17-18 页码:2803-2814
关键词	microchannel flow heat transfer thermal property
英文摘要	Three-dimensional conjugate numerical simulations using the inlet, average and variable thermal properties respectively were performed for the laminar water flow and heat transfer in rectangular microchannels with D-h of 0.333 min at Re of 101-1775. Both average and variable properties are adopted in data reduction. The calculated local and average characteristics of flow and heat transfer are compared among different methods, and with the experiments, correlations and simplified theoretical solution data from published literatures. Compared with the inlet property method, both average and variable property methods have significantly lower f(app), but higher convective heat transfer coefficient h(z) and Nu(z) Compared with the average property method, the variable property method has higher f(app)Re(ave) and lower h(z) at the beginning, but lower f(app)Re(ave) and higher h(z) at the later section of the channel. The calculated Nu(ave) agree well with the Sieder-Tate correlation and the recently reported experiment, validating the traditional macroscale theory in predicting the flow and heat transfer characteristics in the dimension and Re range of the present work. (C) 2007 Elsevier Ltd. All rights reserved.
WOS标题词	Science & Technology ; Physical Sciences ; Technology
类目[WOS]	Thermodynamics ; Energy & Fuels ; Engineering, Mechanical ; Mechanics
研究领域[WOS]	Thermodynamics ; Energy & Fuels ; Engineering ; Mechanics
关键词[WOS]	DIFFERENT ASPECT RATIOS ; SINGLE-PHASE FLOW ; RECTANGULAR MICROCHANNELS ; AXIAL CONDUCTION ; FRICTION FACTORS ; MICRO-CHANNELS ; PRESSURE-DROP ; WATER ; MINI
收录类别	SCI
语种	英语
WOS记录号	WOS:000249896700006
公开日期	2015-12-22
内容类型	期刊论文
源URL	[http://ir.etp.ac.cn/handle/311046/106292]
专题	工程热物理研究所_中国科学院工程热物理所（论文库）_期刊论文（SCI）
作者单位	1.Chinese Acad Sci, Inst Engn Thermophys, Beijing 100080, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100080, Peoples R China
推荐引用方式 GB/T 7714	Li, Zhigang,Huai, Xiulan,Tao, Yujia,et al. Effects of thermal property variations on the liquid flow and heat transfer in microchannel heat sinks[J]. APPLIED THERMAL ENGINEERING,2007,27(17-18):2803-2814.
APA	Li, Zhigang,Huai, Xiulan,Tao, Yujia,&Chen, Huanzhuo.(2007).Effects of thermal property variations on the liquid flow and heat transfer in microchannel heat sinks.APPLIED THERMAL ENGINEERING,27(17-18),2803-2814.
MLA	Li, Zhigang,et al."Effects of thermal property variations on the liquid flow and heat transfer in microchannel heat sinks".APPLIED THERMAL ENGINEERING 27.17-18(2007):2803-2814.