In this paper, numerical simulation of a jet impinging against a flat plane covered with a layer of a porous material is presented. The plate is kept at a temperature higher than that of the incoming fluid. Macroscopic transport equations are obtained based on a volume average concept. Discretization of such governing equations is accomplished by means of the control volume method applied with a boundary-fitted nonorthogonal coordinate system. Pressure-velocity coupling is treated with the use of the SIMPLE algorithm. Parameters such as permeability, thickness of the porous layer and thermal conductivity ratio are varied in order to analyze their effects on the local distribution of Nu. Results indicate that inclusion of a porous layer decreases the peak in Nu avoiding excessive heating or cooling at the stagnation point. Also found was that the integral heat flux from the wall is enhanced for certain range of values of layer thickness, porosity, and thermal conductivity ratio.
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ASME 2009 Power Conference
July 21–23, 2009
Albuquerque, New Mexico, USA
Conference Sponsors:
- Power Division
ISBN:
978-0-7918-4350-5
PROCEEDINGS PAPER
Use of Foam-Like Materials to Enhance Heat Transfer From Surfaces Subjected to Impinging Jets
Marcelo J. S. de Lemos,
Marcelo J. S. de Lemos
Instituto Tecnolo´gico de Aerona´utica - ITA, Sa˜o Jose´ dos Campos, SP, Brazil
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Cleges Fischer
Cleges Fischer
Instituto Tecnolo´gico de Aerona´utica - ITA, Sa˜o Jose´ dos Campos, SP, Brazil
Search for other works by this author on:
Marcelo J. S. de Lemos
Instituto Tecnolo´gico de Aerona´utica - ITA, Sa˜o Jose´ dos Campos, SP, Brazil
Cleges Fischer
Instituto Tecnolo´gico de Aerona´utica - ITA, Sa˜o Jose´ dos Campos, SP, Brazil
Paper No:
POWER2009-81215, pp. 89-95; 7 pages
Published Online:
September 22, 2010
Citation
de Lemos, MJS, & Fischer, C. "Use of Foam-Like Materials to Enhance Heat Transfer From Surfaces Subjected to Impinging Jets." Proceedings of the ASME 2009 Power Conference. ASME 2009 Power Conference. Albuquerque, New Mexico, USA. July 21–23, 2009. pp. 89-95. ASME. https://doi.org/10.1115/POWER2009-81215
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