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TECHNICAL PAPERS

Compact Modeling of Forced Flow in Longitudinal Fin Heat Sinks With Tip Bypass

[+] Author and Article Information
C. B. Coetzer, J. A. Visser

Department of Mechanical and Aeronautical Engineering, University of Pretoria, Pretoria, 0002, South Africa

J. Electron. Packag 125(3), 319-324 (Sep 17, 2003) (6 pages) doi:10.1115/1.1533803 History: Received January 28, 2002; Revised April 12, 2002; Online September 17, 2003
Copyright © 2003 by ASME
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References

Gauche, P., Coetzer, C. B., and Visser, J. A., 1998, “Characteristics of heat sink flow bypass for thermal modelling,” Proc., 5th Int. Conf. For Advanced Computational Methods in Heat Transfer, Poland, pp. 307–316.
Obinelo, I. F., 1997, “Characterization of thermal and hydraulic performance of longitudinal fin heat sinks for system level modelling using CFD methods,” ASME.
Gavali, S., Patankar, S., 1993, “Effect of heat sink on forced convection cooling of electronic components: A numerical study,” Advances in Electronic Packaging, ASME, EEP-Vol. 4-2.
Bar-Cohen, A., 1997, “Air-Cooled heat sinks–Trends and future directions,” Advances in Electronics Packaging, ASME, EEP-Vol. 19-2.
Butterbaugh, M. A., and Kang, S. S., 1995, “Effect of airflow bypass on the performance of heat sinks in electronic cooling,” Advances in Electronic Packaging, ASME, EEP-Vol. 10-2.
Visser, J. A., and Gauche, P., 1996, “A computer model to simulate heat transfer in heat sinks,” Proc. 4th Int. Conf. For Advanced Computational Methods in Heat Transfer, Udine, pp 105–114.
Gopalakrishna, S., 1991, “Numerical and experimental study of forced convection over power supply heat sinks,” ASME Winter Annual Meeting, pp. 1–6, Dec.
Kim, S. J., Lee, S., 1997, “On Heat sink measurement and characterization,” INTERPACK’97, Hawaii, pp. 1903–1909.
Wirtz,  R. A., and Chen,  W., 1994, “Effect of Flow Bypass on the Performance of Longitudinal Fin Heat Sinks,” Trans. ASME, 116 Sept.
Kays,  W. M., 1950, “Loss coefficients for abrupt changes in flow cross section with low Reynolds number flow in single and multiple tube systems,” Trans. ASME, pp. 1067–1074 Nov.
Sam,  R. G., Lessman,  R. C., 1979, “An experimental study of flow over a rectangular body,” J. Fluids Eng., 101, Dec., pp. 443–448.
“FLOTERM REFERENCE MANUAL,” Flomerics Limited, England 1995.
Mills, A. F., 1995, Basic heat and mass transfer, Donnoly and Sons Co.
White, F. M., “Fluid Mechanics,” Second Edition, McGraw Hill, New York, 1988.

Figures

Grahic Jump Location
Average heat sink velocity distribution
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Interfin velocity as a function of heat sinks length
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Flow paths schematically represented
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Flow Resistance network
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Heat sink estimated velocity distribution
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Pressure drop comparison for heat sink 1
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Pressure drop comparison for heat sink 2
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Pressure drop comparison for heat sink 4
Grahic Jump Location
Laminar flow interfin velocity prediction
Grahic Jump Location
Transitional flow interfin velocity prediction

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