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Numerical Heat Transfer, Part A: Applications
An International Journal of Computation and Methodology
Volume 54, 2008 - Issue 4
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Original Articles

Numerical Study of Heat Transfer of a Porous-Block-Mounted Heat Source Subjected to Pulsating Channel Flow

Yueh-Liang Yen Department of Pharmacy, National Taiwan University Hospital, Taipei, Taiwan, Republic of China
,
Po-Chuan Huang Department of Energy and Refrigerating Air-Conditioning Engineering, National Taipei University of Technology, Taipei, Taiwan, Republic of ChinaCorrespondence[email protected]
,
Chao-Fu Yang Department of Energy and Refrigerating Air-Conditioning Engineering, National Taipei University of Technology, Taipei, Taiwan, Republic of China
&
Yen-Jen Chen Department of Energy and Refrigerating Air-Conditioning Engineering, National Taipei University of Technology, Taipei, Taiwan, Republic of China
Pages 426-449 | Received 30 Aug 2007, Accepted 01 Apr 2008, Published online: 16 Jun 2008
 
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Abstract

A numerical analysis was conducted to investigate the convective characteristics of pulsating flow through a channel with a porous-block-mounted heat source. Comprehensive time-dependent flow and temperature data are calculated and averaged over a pulsation cycle in a periodic steady state. The impacts of the Darcy number, pulsating frequency and amplitude, and porous blockage ratio are documented in detail. The results indicate that the periodic alteration in the structure of recirculation flows, caused by both porous block and flow pulsation, has a direct impact on the flow behavior in the vicinity of the porous block and on the heat transfer rate from the heater.

This work was supported by the R.O.C. National Science Council and the R.O.C. Ministry of Economic Affairs, Bureau of Energy, under contracts NSC 95-2221-E-027-113 and 97-D0137-3.

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