An efficient method for modeling radiative transfer in multicomponent gas mixtures with soot

An efficient approach for predicting radiative transfer in high temperature multicomponent gas mixtures with soot particles is presented. The method d raws on the previously published multiplication approach for handling gas m ixtures in the spectral line weighted-sum-of-gray-gases (SLW) model. In thi s method, the gas mixture is treated as a single gas whose absorption black body distribution function is calculated through the distribution functions of the individual species in the mixture. The soot is, in effect, treated as another gas in the mixture. Validation of the method is performed by com parison with line-by-line solutions for radiative transfer with mixtures of water vapor, carbon dioxide, and carbon monoxide with a range of soot load ings (volume fractions). Comparison is performed also with previously publi shed statistical narrow band and classical weighted-sum-of-gray-gases solut ions.