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RESEARCH PAPERS: Radiation

Radiation Heat Transfer of Arbitrary Three–Dimensional Absorbing, Emitting and Scattering Media and Specular and Diffuse Surfaces

[+] Author and Article Information
S. Maruyama, T. Aihara

Institute of Fluid Science, Tohoku University, 2-1-1 Katahira, Aoba-Ku, Sendai 980, Japan

J. Heat Transfer 119(1), 129-136 (Feb 01, 1997) (8 pages) doi:10.1115/1.2824077 History: Received October 09, 1995; Revised August 27, 1996; Online December 05, 2007

Abstract

Analysis of radiation heat transfer using the Radiation Element Method by Ray Emission Model, REM2 , is described. The REM2 is a generalized numerical method for calculating radiation heat transfer between absorbing, emitting and scattering media and specular surfaces with arbitrary three–dimensional configurations. The ray emission model for various radiation elements is expressed by polyhedrons and polygons. Arbitrary thermal conditions can be specified for each radiation element, and generalized radiation transfer can be achieved for both of surface and volume elements by introducing a new definition of view factors. The accuracy of the present method is verified using simple configurations. A cubic participating medium with a spherical cavity covered with specular and diffuse surfaces is analyzed as an example of an arbitrary configuration. The temperature distribution shows good accuracy with a small number (45) of rays emitted from each element compared with the Monte Carlo method.

Copyright © 1997 by The American Society of Mechanical Engineers
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