Targeting the shock layer radiation heating

the radiative transfer equation was calculated by finite volume method

in which a way of boundary treatment

called as ghost cell method

was introduced. Based on the chemical non-equilibrium flow field data

radiation heat flux at wall was computed. The analysis reveals that ghost cell method in dealing with radiative transfer boundary ensures that the boundary conditions fit the physical fact. Good convergence and accuracy within 2.5% have been achieved

validating the physical model and numerical methods. Radiation heating computation of spacecraft using ghost cell method shows that computational radiative heating results agree well with the other researchers' computational results.