This study investigates pressure drop associated with water liquid single-phase flow across an array of staggered micro-pin-fins having circular cross-section. The micro-pin-fins are micro-end milled out of oxygen free copper and have the following dimensions: 180 micron diameter and 683 micron height. The longitudinal pitch and transverse pitch are equal to 400 microns. Seven water inlet temperatures from 22 to 80 °C, and seventeen maximum mass velocities for each inlet temperature, ranging from 159 to 1475 kg/m2s, were tested. The test module was well insulated to maintain adiabatic conditions. The experimental results were compared to those from a micro-pin-fin array having similar size and geometrical arrangement but a square cross-section. The circular micro-pin-fins were seen to yield a significantly lower pressure drop than the square micro-pin-fins. The present experimental results were also compared with the predictions of several friction factor correlations as well as the results from a three-dimensional numerical analysis. Neither was able to accurately predict the experimental data.
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ASME/JSME 2011 8th Thermal Engineering Joint Conference
March 13–17, 2011
Honolulu, Hawaii, USA
Conference Sponsors:
- Heat Transfer Division
ISBN:
978-0-7918-3892-1
PROCEEDINGS PAPER
Experimental Study and Numerical Analysis of Water Single-Phase Pressure Drop Across an Array of Circular Micro-Pin-Fins Available to Purchase
Jonathan R. Mita,
Jonathan R. Mita
University of Hawaii at Manoa, Honolulu, HI
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Weilin Qu,
Weilin Qu
University of Hawaii at Manoa, Honolulu, HI
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Marcelo H. Kobayashi,
Marcelo H. Kobayashi
University of Hawaii at Manoa, Honolulu, HI
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Frank E. Pfefferkorn
Frank E. Pfefferkorn
University of Wisconsin-Madison, Madison, WI
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Jonathan R. Mita
University of Hawaii at Manoa, Honolulu, HI
Weilin Qu
University of Hawaii at Manoa, Honolulu, HI
Marcelo H. Kobayashi
University of Hawaii at Manoa, Honolulu, HI
Frank E. Pfefferkorn
University of Wisconsin-Madison, Madison, WI
Paper No:
AJTEC2011-44583, T10131; 9 pages
Published Online:
March 1, 2011
Citation
Mita, JR, Qu, W, Kobayashi, MH, & Pfefferkorn, FE. "Experimental Study and Numerical Analysis of Water Single-Phase Pressure Drop Across an Array of Circular Micro-Pin-Fins." Proceedings of the ASME/JSME 2011 8th Thermal Engineering Joint Conference. ASME/JSME 2011 8th Thermal Engineering Joint Conference. Honolulu, Hawaii, USA. March 13–17, 2011. T10131. ASME. https://doi.org/10.1115/AJTEC2011-44583
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