Application of the Total Transmittance Nonhomogeneous Radiation Model to Methane Combustion

[+] Author and Article Information
W. L. Grosshandler, H. D. Nguyen

Department of Mechanical Engineering, Washington State University, Pullman, Wash. 99164-2920

J. Heat Transfer 107(2), 445-450 (May 01, 1985) (6 pages) doi:10.1115/1.3247435 History: Received October 19, 1983; Online October 20, 2009


The total transmittance nonhomogeneous model (TTNH) is about 500 times faster than narrow-band models, and it is usually within 10 percent of the more accurate computation. The purpose of this article is to extend the TTNH model to include CH4 and CO as well as CO2 and H2 O, and to include interaction with a black boundary where previously the model had been limited to transparent boundaries. Several realistic combustion examples are presented in which the radiant intensity from a hot, black wall interacts with a nonisothermal volume containing variable concentrations of CO2 , H2 O, CH4 , CO, and soot. The calculations indicate that the TTNH model can be reliably applied to nonhomogeneous combustion environments containing methane and that the presence of a radiating boundary poses no computational difficulty.

Copyright © 1985 by ASME
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