ABSTRACT

This chapter discusses general numerical methods for solving the radiative transfer equation (RTE) to determine the local spectral intensity, the local radiative flux, and the flux gradient. Many methods for the solution of the differential form of the RTE are based on moment methods, and these are often combined with using a series expansion of the intensity along a particular direction vector. Researchers were asked to apply their favorite solution method to these benchmark problems and provide numerical values of boundary heat flux distributions and the divergence of the radiative flux at various locations within the medium. A radiatively participating medium was specified with given spectrally dependent anisotropic scattering properties, and a model was specified for its spectrally dependent band absorptance. Standard techniques such as finite-difference schemes can be used for solving the radiative diffusion differential equation.