Effect of emitting characteristics on transient temperature distribution in linearly anisotropic scattering media

Considering radiation transfer direction, this paper investigated redistribution of radiant energy in the case of anisotropic scattering and deduced radiative transfer coefficients (RTCs) by ray tracing method combined with Hottel and Sarofim's zonal method. One-dimensional anisotropically participating translucent gray media was considered. Boundary surfaces were of mirror reflection and one of surfaces was with coating. RTCs were used to calculate radiative heat source term. Transient energy equation was solved by fully implicit control-volume method. Boundary surfaces were simultaneously exposed to both radiative heating and convective cooling. Four scattering phase functions were taken into account. Taking isotropic scattering as a reference, effects of emitting characteristics for both sides of opaque surface and linearly anisotropic scattering phase functions on transient temperature distribution were analyzed by calculation. The results show that relative temperature differences between the linearly anisotropic scattering and isotropic scattering media are approximately proportional to the scattering asymmetry parameter.