Radiative heat transfer of non-gray gases in 2D rectangular geometry by ray tracing method and SLW correlated model

The ray-tracing method and the SLW correlated model have been implemented to address the problem of radiative heat transfer in a two-dimensional geometry filled with non-gray gases. Mixtures with 10 % C O 2 and 20 % H 2 O were treated as the participating non-gray gases, while N 2 was regarded as non-participating in the radiative transfer process. The SLW correlated method has been used to compute discrete absorption coefficients, their associated weights, and the Planck-mean absorption coefficient. An exact semi-analytical method using Bickley-Naylor functions, Gauss quadrature, and the ray tracing method has been developed to solve the radiative transfer equation (RTE). Radiative properties of the non-gray gases have been calculated for different temperatures to describe the thermal behavior of the medium. The effect of the reference temperature and non-gray gas radiative properties on the RTE integral solutions, was also examined. Dimensionless temperature and radiative heat flux distributions were simulated and tabulated under radiative equilibrium, then presented and discussed. The computed radiative quantities showed good agreement with established reference models.