Local Temperature Variations of a Transpiration-Cooled Wall Due to Radiant Heating

[+] Author and Article Information
J. E. Anderson

Heat Transfer Laboratory, School of Mechanical and Aerospace Engineering, University of Minnesota, Minneapolis, Minn.

J. Heat Transfer 90(1), 146-150 (Feb 01, 1968) (5 pages) doi:10.1115/1.3597445 History: Received December 27, 1966; Online August 25, 2011


When the porous wall of a transpiration-cooled device is subject to a radiant heat flux, the maximum temperature of the solid wall material rises above the average temperature of the gas at the wall. A model of this phenomenon amenable to theoretical analysis is considered. Calculated results, in terms of the temperature difference between the solid and the gas, are presented in terms of five parameters: The dimensionless blowing parameter, which depends on the size of the holes in the porous wall; the porosity of the wall; the ratio of solid to gas thermal conductivity; the front-surface thermal boundary layer thickness; and the ratio of radiant to total heat flux to the wall.

Copyright © 1968 by ASME
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