期刊
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
卷 49, 期 9-10, 页码 1603-1618出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijheatmasstransfer.2005.11.002
关键词
heat pipes; microfluidics; capillary flow; evaporative cooling; microgrooves
Analytical and numerical solutions are presented for steady evaporating flow in open microchannels having a rectangular cross section and a uniform depth. The flow, driven by the axial gradient of capillary pressure, generally consists of an entry region where the meniscus is attached to the top corners of the channel followed by a jump-like transition to a corner-flow region in which the meniscus progressively recedes into the bottom corners of the channel. Illustrative numerical solutions are used to guide the derivation of an easily applied analytical approximation for the maximum sustainable heat flux or capillary limit. (c) 2005 Elsevier Ltd. All rights reserved.
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