ARTICLE:

• THE SPECTRAL LINE WEIGHTED-SUM-OF-GRAY-GASES MODEL-A REVIEW  download article

Martin K. Denison
Advanced Combustion Engineering Research Center, Brigham Young University, Utah, USA

Brent W. Webb
Department of Mechanical Engineering, Brigham Young University, Provo, Utah, USA

ABSTRACT

This paper reviews the development and validation of the Spectral-Line Weighted-Sum-of-Gray-Gases (SLW) model for the prediction of radiation transfer in high temperature gases. The parameters in the model are obtained directly from the line-by-line spectra of H₂O and CO₂. The model allows the absorption coefficient to be the basic radiative property rather than a transmissivity or band absorptance etc, and can therefore be used with any arbitrary solution method for the Radiative Transfer Equation (RTE). The model is based on a novel absorption-line blackbody distribution function. Predictions from the model compare well with spectral line-by-line benchmarks.

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