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ISSN Online: 2377-424X

ISBN CD: 1-56700-226-9

ISBN Online: 1-56700-225-0

International Heat Transfer Conference 13
August, 13-18, 2006, Sydney, Australia

DESIGN OF THE TWO-PHASE MICROCHANNEL HEAT SINKS CONSIDERING THE MASS FLOW DISTRIBUTION

Get access (open in a dialog) DOI: 10.1615/IHTC13.p14.200
9 pages

要約

Many numerical studies on microchannel heat sinks have been carried out to understand the mechanism of the heat transfer and the pressure drop in the microchannel heat sinks. However, previous studies on the microchannel heat sinks were focused on the single channel system or single phase flow. Mass flow distribution in multi-channel heat sinks is strongly dependent on geometric parameters of the header of microchannels. In this study, numerical simulation was performed to obtain the mass flow distribution and total pressure drop in microchannel heat sinks to understand the two phase heat transfer characteristics. The objective of this study is to analyze the influence of the geometrical parameters of microchannel heat sinks on the mass flow distribution among channels. This simulation investigated the impact of geometrical parameters on the mass flow distribution in multi-channel heat sinks and provided optimal geometric parameters for header design under given geometric criteria. For the optimal design of microchannel heat sinks, absolute average deviation, root mean squared deviation, total pressure drop, and area ratio (header area over microchannel area) were calculated with respect to n, the geometric parameter of header shape. Mass flow rate distribution tends to be less variant among microchannels over a certain value of n.