Experimental results of the thermal and hydraulic performances of silicon-based, low aspect ratio micropin-fin cold plates under cross flow conditions are reported. The pins were both circular and square in shape with dimensions (diameter for circular and sides for square) ranging from to . The test chip contained 20 integral temperature sensors which were used to determine the thermal resistance of the cold plates. The experiments were conducted using water, over a Reynolds number (Re) ranging from 40 to 1000. The data show that the average Nusselt number (Nu) based on the fin diameter varies as for and as for , where Re is the Reynolds number based on maximum velocity and the fin diameter. Analysis of the Fanning friction factor data shows that varies as for and as for .
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e-mail: ravi.s.prasher@intel.com
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Nusselt Number and Friction Factor of Staggered Arrays of Low Aspect Ratio Micropin-Fins Under Cross Flow for Water as Fluid
Ravi S. Prasher,
e-mail: ravi.s.prasher@intel.com
Ravi S. Prasher
Adjunct Professor
Intel Corporation
, CH5-157, 5000 W. Chandler Blvd., Chandler, AZ 85226 and Department of Mechanical and Aerospace Engineering, Arizona State University
, Tempe, AZ 85287
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John Dirner,
John Dirner
Intel Corporation
, CH5-157, 5000 W. Chandler Blvd., Chandler, AZ 85226
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Je-Young Chang,
Je-Young Chang
Intel Corporation
, CH5-157, 5000 W. Chandler Blvd., Chandler, AZ 85226
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Alan Myers,
Alan Myers
Intel Corporation
, CH5-157, 5000 W. Chandler Blvd., Chandler, AZ 85226
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David Chau,
David Chau
Intel Corporation
, CH5-157, 5000 W. Chandler Blvd., Chandler, AZ 85226
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Dongming He,
Dongming He
Intel Corporation
, CH5-157, 5000 W. Chandler Blvd., Chandler, AZ 85226
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Suzana Prstic
Suzana Prstic
Intel Corporation
, CH5-157, 5000 W. Chandler Blvd., Chandler, AZ 85226
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Ravi S. Prasher
Adjunct Professor
Intel Corporation
, CH5-157, 5000 W. Chandler Blvd., Chandler, AZ 85226 and Department of Mechanical and Aerospace Engineering, Arizona State University
, Tempe, AZ 85287e-mail: ravi.s.prasher@intel.com
John Dirner
Intel Corporation
, CH5-157, 5000 W. Chandler Blvd., Chandler, AZ 85226
Je-Young Chang
Intel Corporation
, CH5-157, 5000 W. Chandler Blvd., Chandler, AZ 85226
Alan Myers
Intel Corporation
, CH5-157, 5000 W. Chandler Blvd., Chandler, AZ 85226
David Chau
Intel Corporation
, CH5-157, 5000 W. Chandler Blvd., Chandler, AZ 85226
Dongming He
Intel Corporation
, CH5-157, 5000 W. Chandler Blvd., Chandler, AZ 85226
Suzana Prstic
Intel Corporation
, CH5-157, 5000 W. Chandler Blvd., Chandler, AZ 85226J. Heat Transfer. Feb 2007, 129(2): 141-153 (13 pages)
Published Online: April 13, 2006
Article history
Received:
August 30, 2005
Revised:
April 13, 2006
Citation
Prasher, R. S., Dirner, J., Chang, J., Myers, A., Chau, D., He, D., and Prstic, S. (April 13, 2006). "Nusselt Number and Friction Factor of Staggered Arrays of Low Aspect Ratio Micropin-Fins Under Cross Flow for Water as Fluid." ASME. J. Heat Transfer. February 2007; 129(2): 141–153. https://doi.org/10.1115/1.2402179
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