The finite-volume method for radiative transfer is applied to two-dimensional rectangular enclosures.The results are compared with those obtained by the existing solutions.It shows that the result obtained by finite-volume software is reliable.According to the analysis，different phase function and scattering albedo have effects on the temperature profile.Meanwhile

the temperature distributions in the two-dimensional rectangular media with linear anisotropic scattering and isotropic scattering phase function are calculated respectively.The results show that there is a definite zone for the different extinction coefficient and scattering albedo

which satisfies the given precision.Therefore

when the two parameters are chosen in this zone

the anisotropic scattering media can be simplified to isotropic scattering media

and it makes the model easier.