Solution of Radiative Transfer Equation in Two-Dimensional Media with Real Gas through Zone Method and Box Model

According to high dependence of spectral behavior of gases to temperature, pressure, wave length and concentration, it is needed that such properties be explained by simpler mathematical models. Moreover, appropriate numerical methods should be used to solve the radiative transfer equation for radiation intensity in the media, heat flux divergence and temperature field. Solution of the radiative transfer equation has been made by several researchers for gray gas in one-dimensional case. In this article, the radiative transfer equation is solved for two-dimensional case (long rectangular section) considering the spectral behavior of media (CO2 , H2O gases) through combining the box model and zone method. Because of the nongray behavior of the industrial gases, solving this equation can improve the gray gases assumptions in the model.