Compact Modeling of Fluid Flow and Heat Transfer in Straight Fin Heat Sinks

[+] Author and Article Information
Duckjong Kim

Thermo-Fluid System Department, Korea Institute of Machinery and Materials, Daejeon, 305-660, Korea

Sung Jin Kim

Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, 305-701, Korea

J. Electron. Packag 126(2), 247-255 (Jul 08, 2004) (9 pages) doi:10.1115/1.1756149 History: Revised May 01, 2003; Revised December 01, 2003; Online July 08, 2004
Copyright © 2004 by ASME
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Trend in power density of Intel microprocessors
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Porous medium approach: (a) Forced convective flow through a straight fin heat sink; (b) Equivalent porous medium
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Experimental apparatus: (a) pressure measurement; (b) temperature measurement
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K and hl for fully developed flow in straight fin heat sinks: (a) K; (b) hl
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Fully-developed profiles in straight fin heat sinks: (a) velocity; (b) temperature (εkf/(1-ε)ks=0.0001)
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Pressure distributions: (a) ε=0.4; (b) ε=0.8(vin=1(m/s))
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Temperature distributions at the bottom of straight fin heat sinks: (a) ε=0.8,vin=0.5(m/s); (b) ε=0.6,vin=1(m/s); (c) ε=0.4,vin=2(m/s)
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Effect of Re Dh/L on relative error due to neglect of the entrance effect: (a) pressure drop; (b) thermal resistance
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Effect of the porosity on total thermal resistance of a heat sink: (a) microchannel heat sinks (Re Dh/L<O(10)); (b) conventional straight fin heat sinks (Re Dh/L>∼O(10))




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