Modeling the radiation of participating media with coupled finite volume method

The relationship between the weighting factors used in the weighted sum of gray gases model (WSGGM), and the development of a new 3-D emitting, absorbing, and scattering media mathematical model and computer code for radiation based on the coupling of finite volume method (FVM) and the WSGGM is discussed. One of the important issues for radiative heat transfer in a combustion system is the description of the radiative properties of the media gases, which is a mixture of many gases and particles. The model used for defining the radiative properties include spectral line-by-line models, spectral band models, and global models. Radiative heat flux from a mathematical method without scattering is slightly higher than that from the method with scattering. The forward scattering media gives lower incident radiation than the isotropic scattering media, which gives lower incident radiation than the backward scattering media.