NDLI: Use of Foam-Like Materials to Enhance Heat Transfer From Surfaces Subjected to Impinging Jets

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Marcelo, J. S. De Lemos Fischer, Cleges
Copyright Year	2009
Abstract	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.
Sponsorship	Power Division
Starting Page	89
Ending Page	95
Page Count	7
File Format	PDF
ISBN	9780791843505
DOI	10.1115/POWER2009-81215
e-ISBN	9780791838536
Conference Proceedings	ASME 2009 Power Conference
Language	English
Publisher Date	2009-07-21
Publisher Place	Albuquerque, New Mexico, USA
Access Restriction	Subscribed
Subject Keyword	Temperature Cooling Computer simulation Porous materials Permeability Pressure Heat flux Fluids Algorithms Heating Jets Thermal conductivity Porosity Heat transfer
Content Type	Text
Resource Type	Article

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