Experimental measurements were obtained to characterize the thermal performance of ducted air suction in conjunction with a pin-fin heat sink. Four single nozzles of different diameters and two multiple-nozzle arrays were studied at a fixed nozzle-to-target distance, for different turbulent Reynolds numbers Variations of nozzle-to-target distance, i.e., open area, in ducted suction were found to have a strong effect on heat transfer especially with the larger diameter single nozzle and both multiple-nozzle arrays. Enhancement factors were computed with the heat sink in suction flow, relative to a bare surface, and were in the range of 8.3 to 17.7, with the largest value being obtained for the nine-nozzle array. Results from the present study on air jet suction are compared with previous experiments with air jet impingement on the pin-fin heat sink. Average heat transfer coefficients and thermal resistance values are reported for the heat sink as a function of Reynolds number, air flow rate, and pumping power. [S1043-7398(00)00903-8]
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September 2000
Technical Briefs
Heat Transfer From a Finned Surface in Ducted Air Jet Suction and Impingement
Luis A. Brignoni,
Luis A. Brignoni
Department of Mechanical Engineering, University of Wisconsin–Milwaukee, P.O. Box 784, Milwaukee, WI 53201
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Suresh V. Garimella, Mem ASME, Associate Professor,
Suresh V. Garimella, Mem ASME, Associate Professor,
School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907-1288
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Luis A. Brignoni
Department of Mechanical Engineering, University of Wisconsin–Milwaukee, P.O. Box 784, Milwaukee, WI 53201
Suresh V. Garimella, Mem ASME, Associate Professor,
School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907-1288
Contributed by the Electrical and Electronic Packaging Division of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS. Manuscript received by the EEPD February 1999; revised manuscript received December 1999. Associate Technical Editor: R. Wirtz.
J. Electron. Packag. Sep 2000, 122(3): 282-285 (4 pages)
Published Online: December 1, 1999
Article history
Received:
February 1, 1999
Revised:
December 1, 1999
Citation
Brignoni , L. A., and Garimella , S. V. (December 1, 1999). "Heat Transfer From a Finned Surface in Ducted Air Jet Suction and Impingement ." ASME. J. Electron. Packag. September 2000; 122(3): 282–285. https://doi.org/10.1115/1.1286106
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