In the present study, fluid-flow and heat-transfer characteristics of a microchannel heat sink subject to an impinging jet are experimentally investigated. In order to evaluate the cooling performance of a microchannel heat sink subject to an impinging jet under the condition of fixed pumping power, the pressure drop across the heat sink and temperature distributions at its base are measured. Specifically, a microthermal sensor array is fabricated and used to accurately measure temperature distributions at the base of the heat sink. Based on these experimental results, a correlation for the pressure drop across a microchannel heat sink subject to an impinging jet and a correlation for its thermal resistance are suggested. In addition, it is shown that the cooling performance of an optimized microchannel heat sink subject to an impinging jet is enhanced by about 21% compared to that of the optimized microchannel heat sink with a parallel flow under the fixed-pumping-power condition.
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Research Papers
Fluid Flow and Thermal Characteristics of a Microchannel Heat Sink Subject to an Impinging Air Jet
Seok Pil Jang,
Seok Pil Jang
School of Aerospace and Mechanical Engineering
Hankuk Aviation University
Goyang, Gyeonggi-do, 412-791 Korea
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Sung Jin Kim
Sung Jin Kim
+82-42-869-3043
Department of Mechanical Engineering
e-mail: sungjinkim@kaist.ac.kr
Korea Advanced Institute of Science and Technology
Daejeon, 305-701 Korea
Search for other works by this author on:
Seok Pil Jang
School of Aerospace and Mechanical Engineering
Hankuk Aviation University
Goyang, Gyeonggi-do, 412-791 Korea
Sung Jin Kim
+82-42-869-3043
Department of Mechanical Engineering
Korea Advanced Institute of Science and Technology
Daejeon, 305-701 Koreae-mail: sungjinkim@kaist.ac.kr
J. Heat Transfer. Jul 2005, 127(7): 770-779 (10 pages)
Published Online: December 26, 2004
Article history
Received:
April 7, 2004
Revised:
December 26, 2004
Citation
Jang, S. P., and Kim, S. J. (December 26, 2004). "Fluid Flow and Thermal Characteristics of a Microchannel Heat Sink Subject to an Impinging Air Jet." ASME. J. Heat Transfer. July 2005; 127(7): 770–779. https://doi.org/10.1115/1.1924628
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