Modeling study on axial wetting length of meniscus in vertical rectangular microgrooves

CORC > 工程热物理研究所 > 中国科学院工程热物理研究所 > 中国科学院工程热物理所（论文库） > 期刊论文（SCI）

	Modeling study on axial wetting length of meniscus in vertical rectangular microgrooves
	Nie, Xuelei; Hu, Xuegong; Tang, Dawei
刊名	APPLIED THERMAL ENGINEERING
	2013-04-15
卷号	52 期号:2 页码:615-622
关键词	Micro-PIV Microgrooves Meniscus Wetting length Modeling
英文摘要	In this work, the traditional model for predicting axial wetting length of meniscus in vertical microgrooves is introduced firstly. The traditional model may cause inaccurate results in predicting wetting length in vertical microgrooves because of the assumption of round meniscus in cross sections of microgrooves and the way of calculating curvature. In order to develop this model and make it more accurate, a revised micro-PIV system is built to test the meniscus shapes in cross sections of vertical and horizontal microgrooves, and the experimental results prove that the real shapes of meniscus are parabolic other than round. The fitting formulas of meniscus shapes are obtained with software Origin 7.5. Based on experimental results and fitting formulas, the traditional model is revised by changing the way to calculate curvature. In the modified model, the curvature for calculating axial wetting length of meniscus equals average curvature of meniscus in cross section of vertical microgrooves minus the average curvature of meniscus in cross section of horizontal microgrooves. It is proved that the modified model can predict the wetting length in vertical microgrooves better than the original model. The average difference between experiment and modified model is 2.5% while that between experiment and traditional model is 174.2%. The disadvantage of the modified model is that using the new model to predict wetting length needs to know the real shapes of meniscus in vertical and horizontal microgrooves. (C) 2012 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]	HEAT-TRANSFER ; IMAGE VELOCIMETRY ; COOLING SYSTEM ; FLOW ; MICROCHANNELS ; EVAPORATOR ; TRANSPORT
收录类别	SCI
语种	英语
WOS记录号	WOS:000316586100038
内容类型	期刊论文
源URL	[http://ir.etp.ac.cn/handle/311046/98837]
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	Chinese Acad Sci, Inst Engn Thermophys, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Nie, Xuelei,Hu, Xuegong,Tang, Dawei. Modeling study on axial wetting length of meniscus in vertical rectangular microgrooves[J]. APPLIED THERMAL ENGINEERING,2013,52(2):615-622.
APA	Nie, Xuelei,Hu, Xuegong,&Tang, Dawei.(2013).Modeling study on axial wetting length of meniscus in vertical rectangular microgrooves.APPLIED THERMAL ENGINEERING,52(2),615-622.
MLA	Nie, Xuelei,et al."Modeling study on axial wetting length of meniscus in vertical rectangular microgrooves".APPLIED THERMAL ENGINEERING 52.2(2013):615-622.