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Comparison of the Monte Carlo Method Applied to the Absorption-Line Blackbody Distribution With a Conventional WSGG Model

[+] Author Affiliations
André Maurente, Horácio A. Vielmo, Francis H. R. França

Federal University of Rio Grande do Sul

Paper No. IMECE2006-14394, pp. 93-101; 9 pages
  • ASME 2006 International Mechanical Engineering Congress and Exposition
  • Heat Transfer, Volume 1
  • Chicago, Illinois, USA, November 5 – 10, 2006
  • Conference Sponsors: Heat Transfer Division
  • ISBN: 0-7918-4784-5 | eISBN: 0-7918-3790-4
  • Copyright © 2006 by ASME


This paper presents results of radiation heat transfer obtained from two gas models: the Absorption-Line Blackbody (ALB) distribution function and a conventional weighted-sum-of-gray-gases (WSGG) model. A typical cylindrical combustion chamber is considered. For the first model, the radiative exchanges are computed with the Monte Carlo, since the ALB distribution function can be directly related to the Monte Carlo cumulative distribution function. For the WSGG model, the radiation heat transfer is solved with the zonal method. Two gaseous mixtures are considered, and represent typical products of stoichiometric combustion of fuel oil and methane. While the Monte Carlo and the zonal solutions match for a gray gas, considerable departures are observed for the gas spectral using the ALB and the WSGG models.

Copyright © 2006 by ASME



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