The present work forms a fundamental investigation on the effects of using intermittently porous cavities for regulating and modifying the flow and temperature fields and therefore changing the skin friction and heat transfer characteristics of an external surface. A general flow model that accounts for the effects of the impermeable boundary and inertial effects is used to describe the flow inside the porous region. Solutions of the problem have been carried out using a finite-difference method through the use of a stream function-vorticity transformation. Various interesting characteristics of the flow and temperature fields in the composite layer are analyzed and discussed in detail. The effects of various governing dimensionless parameters, such as the Darcy number, Reynolds number, Prandtl number, the inertia parameter as well as the effects of pertinent geometric parameters are thoroughly explored. Furthermore, the interactive effects of the embedded porous substrates on skin friction and heat transfer characteristics of an external surface are analyzed. The configuration analyzed in this work provides an innovative approach in altering the frictional and heat transfer characteristics of an external surface.
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Analysis of Heat Transfer Regulation and Modification Employing Intermittently Emplaced Porous Cavities
K. Vafai,
K. Vafai
Department of Mechanical Engineering, The Ohio State University, Columbus, OH 43210
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P. C. Huang
P. C. Huang
Department of Mechanical Engineering, The Ohio State University, Columbus, OH 43210
Search for other works by this author on:
K. Vafai
Department of Mechanical Engineering, The Ohio State University, Columbus, OH 43210
P. C. Huang
Department of Mechanical Engineering, The Ohio State University, Columbus, OH 43210
J. Heat Transfer. Aug 1994, 116(3): 604-613 (10 pages)
Published Online: August 1, 1994
Article history
Received:
September 1, 1992
Revised:
August 1, 1993
Online:
May 23, 2008
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Vafai, K., and Huang, P. C. (August 1, 1994). "Analysis of Heat Transfer Regulation and Modification Employing Intermittently Emplaced Porous Cavities." ASME. J. Heat Transfer. August 1994; 116(3): 604–613. https://doi.org/10.1115/1.2910912
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