Impinging jet heat transfer is a promising method to cool electronic components. In this paper, a numerical study has been carried out to examine the conjugate heat transfer under a confined impinging jet using a plate-fin heat sink as the target plate. Effects of geometric parameters such as fin number, fin height, and fin-to-spacing ratio are examined over a range of jet Reynolds numbers using dielectric fluid FC-72 as the fluid medium. Thermal resistance, pressure drop, and Nusselt number are the main criteria used to evaluate the thermal and fluid dynamic performance of this flow system. Furthermore, the effects of fin height, fin-to-spacing ratio, and jet Reynolds number on impinging jet heat transfer are obtained. The concept of an effective Nusselt number is introduced for computing the heat transfer effectiveness of heat sinks with different fin numbers.
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e-mail: zhengquanlou@nus.edu.sg
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September 2008
Technical Briefs
A Numerical Study of a Heat Sink Fin Under a Laminar Impinging Jet
Z. Q. Lou,
Z. Q. Lou
Thermal Lab 2, Department of Mechanical Engineering,
e-mail: zhengquanlou@nus.edu.sg
National University of Singapore
, Singapore 119260, Singapore
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C. Yap,
C. Yap
Thermal Lab 2, Department of Mechanical Engineering,
National University of Singapore
, Singapore 119260, Singapore
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A. S. Mujumdar
A. S. Mujumdar
Thermal Lab 2, Department of Mechanical Engineering,
National University of Singapore
, Singapore 119260, Singapore
Search for other works by this author on:
Z. Q. Lou
Thermal Lab 2, Department of Mechanical Engineering,
National University of Singapore
, Singapore 119260, Singaporee-mail: zhengquanlou@nus.edu.sg
C. Yap
Thermal Lab 2, Department of Mechanical Engineering,
National University of Singapore
, Singapore 119260, Singapore
A. S. Mujumdar
Thermal Lab 2, Department of Mechanical Engineering,
National University of Singapore
, Singapore 119260, SingaporeJ. Electron. Packag. Sep 2008, 130(3): 034501 (5 pages)
Published Online: August 8, 2008
Article history
Received:
August 30, 2005
Revised:
April 28, 2007
Published:
August 8, 2008
Citation
Lou, Z. Q., Yap, C., and Mujumdar, A. S. (August 8, 2008). "A Numerical Study of a Heat Sink Fin Under a Laminar Impinging Jet." ASME. J. Electron. Packag. September 2008; 130(3): 034501. https://doi.org/10.1115/1.2809447
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