Compact Modeling of Fluid Flow and Heat Transfer in Pin 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

Alfonso Ortega

Department of Aerospace and Mechanical Engineering, The Center for Electronics Packaging Research, University of Arizona, Tucson, AZ 85721

J. Electron. Packag 126(3), 342-350 (Oct 06, 2004) (9 pages) doi:10.1115/1.1772415 History: Received October 01, 2003; Revised February 01, 2004; Online October 06, 2004
Copyright © 2004 by ASME
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Porous medium approach: (a) forced convective flow through a pin fin heat sink; (b) equivalent porous medium
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Nusselt number for pin fin heat sinks
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Three divided regions for pressure calculation
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Scaled-up pin fin heat sink (εx=0.6,εz=0.6,H=20 (mm))
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Test sections: (a) pressure measurement; (b) temperature measurement
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Pressure distributions inside pin fin heat sinks
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Heat transfer in the heat sink base: (a) heatlines; (b) heat flux distribution (εx=0.4,εz=0.4,vin=5 (m/s))
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Pressure distributions inside pin fin heat sinks: (a) εx=0.2,εz=0.2; (b) εx=0.4,εz=0.4; (c) εx=0.6,εz=0.6; (d) εx=0.8,εz=0.8 (vin=1 (m/s))
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Temperature distributions at the bottom of pin fin heat sinks: (a) εx=0.2,εz=0.2; (b) εx=0.8,εz=0.8 (vin=1 (m/s))
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Effect of surface porosities on total thermal resistance of a heat sink: (a) conventional pin fin heat sinks; (b) microstructures of pin fin shape
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Thermal performance of heat sinks presented by Jonsson and Moshfegh 4




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