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Cooling Enhancement of a Heat Source Through Flow Pulsation and Porous Block

[+] Author Affiliations
Po-Chuan Huang, Shy-Her Nian, Chao-Fu Yang

National Taipei University of Technology, Taipei, Taiwan

Paper No. HT-FED2004-56072, pp. 273-281; 9 pages
doi:10.1115/HT-FED2004-56072
From:
  • ASME 2004 Heat Transfer/Fluids Engineering Summer Conference
  • Volume 4
  • Charlotte, North Carolina, USA, July 11–15, 2004
  • Conference Sponsors: Heat Transfer Division and Fluids Engineering Division
  • ISBN: 0-7918-4693-8 | eISBN: 0-7918-3740-8
  • Copyright © 2004 by ASME

abstract

A numerical study of forced pulsating flow in a parallel-plate channel with a porous-block-attached strip heat source at the bottom wall is presented. Comprehensive time-dependent flow and temperature data are calculated and averaged over a pulsation cycle in a periodic steady state. The results show that the cycle-space averaged Nusselt number for pulsating flow is higher than that for steady flow. The heat transfer enhancement factor increases with particle diameter, and pulsation frequent, but decreases with pulsation amplitude. The method combining flow pulsation with particle-porous heat sink can be considered as an augment heat transfer tool for cooling high-speed electronic devices.

Copyright © 2004 by ASME

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