A Conservative Formulation of the Discrete Transfer Method

[+] Author and Article Information
P. J. Coelho, M. G. Carvalho

Mechanical Engineering Department, Instituto Superior Técnico, Technical University of Lisbon, Av. Rovisco Pais, 1096 Lisboa Codex, Portugal

J. Heat Transfer 119(1), 118-128 (Feb 01, 1997) (11 pages) doi:10.1115/1.2824076 History: Received October 02, 1995; Revised September 25, 1996; Online December 05, 2007


The discrete transfer method, often employed to calculate radiative heat transfer in combustion chambers, is not conservative. The reason for this behavior is examined and a conservative formulation is proposed and evaluated. A simple treatment of isotropic scattering media is also presented. The original and the conservative formulation of the method are applied to two-dimensional and three-dimensional enclosures containing a participating medium. It is shown that the accuracy of the original and the conservative formulation is very similar, but the proposed formulation has the advantage of ensuring energy conservation.

Copyright © 1997 by The American Society of Mechanical Engineers
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