The Interaction of Thermal Radiation in Optically Thick Boundary Layers

[+] Author and Article Information
J. L. Novotny, Kwang-Tzu Yang

Heat Transfer and Fluid Mechanics Laboratory, Department of Mechanical Engineering, University of Notre Dame, Notre Dame, Ind.

J. Heat Transfer 89(4), 309-312 (Nov 01, 1967) (4 pages) doi:10.1115/1.3614390 History: Received August 03, 1966; Revised March 21, 1967; Online August 25, 2011


An analysis is presented to examine the role of the Rosseland or optically thick approximation in convection-radiation interaction situations. The analysis is formulated for the flow of a gray gas in a laminar two-dimensional boundary layer under the restriction of small temperature differences within the flow field. The boundary-layer energy equation is treated using the method of matched asymptotic expansions based on a parameter which characterizes the optical thickness of the gas. Two illustrative examples of the resulting equations are presented.

Copyright © 1967 by ASME
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