SLW modeling of radiative transfer in multicomponent gas mixtures

The methods of spectral integration for SLW modeling in the multicomponent gas mixtures are considered. The direct method and the method of convolution are extended to the multicomponent mixtures. Two new methods of spectral integration are proposed: the method of superposition and the multiplication method. A hybrid method based on desirable attributes of the latter two methods is also considered. The validation of the methods is performed by the prediction of radiative transfer in isothermal homogeneous media and in a ternary gas mixture layer with step-wise Variation of temperature and species concentrations (water vapor, carbon dioxide and carbon monoxide). The HITEMP spectral database is used for evaluation of SLW spectral parameters and line-by-line benchmark solution. (C) 2000 Elsevier Science Ltd. All rights reserved.