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 .
Nusselt Number and Friction Factor of Staggered Arrays of Low Aspect Ratio Micropin-Fins Under Cross Flow for Water as Fluid
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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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