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TECHNICAL PAPERS

Finned Metal Foam Heat Sinks for Electronics Cooling in Forced Convection

[+] Author and Article Information
A. Bhattacharya, R. L. Mahajan

CAMPmode, Mechanical Engineering Department, University of Colorado, Campus Box 427, Boulder, CO 80309–0427

J. Electron. Packag 124(3), 155-163 (Jul 26, 2002) (9 pages) doi:10.1115/1.1464877 History: Received September 05, 2000; Online July 26, 2002
Copyright © 2002 by ASME
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References

Figures

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Schematic of the fabricated 1—finned metal foam heat sink
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Pictures of the metal foam heat sinks with one and four fins used in our study
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Schematic of the experimental setup
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Plot of heat transfer coefficient as a function of air velocity for the 20 PPI foam samples
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Plot of pressure drop at different air velocities for the 20 PPI foam samples
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Heat transfer coefficients for the 5 PPI samples as a function of flow velocity
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Pressure drop characteristics of the 5 PPI samples as a function of flow velocity
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Heat transfer coefficients for the samples with four fins
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Pressure drop characteristics for the samples with four fins
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Experimental Nusselt numbers versus empirical correlation [Eq. (10)] for finned metal foam heat sinks
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Picture of metal foam (5 PPI)
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Schematic of the novel finned metal foam heat sink proposed by Calmidi et al. 17
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Thermal resistance as a function of average velocity
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Schematic of the longitudinal finned heat sink of Lau and Mahajan 9
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Comparison of heat transfer coefficients for longitudinal finned and finned metal foam (20 PPI) heat sinks
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System curves for the different heat sinks along with the fan curve
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Heat transfer coefficient ratio for channel flows
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Comparison of the experimental and theoretical [Eq. (15)] Nusselt numbers

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