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阐述了含吸收散射性介质三维空腔内辐射传递方程的离散坐标解法。讨论了入射散射项积分格式的选取，以及假散射和射线效应对解精度的影响。对三维矩形炉膛内辐射传递过程进行了数值模拟，并与区域法和离散传递法进行比较。比较结果表明离散坐标法具有较好的精度，是目前燃烧室内辐射传热过程数值模拟的一种较好的方法。
The discrete coordinate solution of the radiation transfer equation in three-dimensional cavity with absorbing scattering media is described. The selection of the integral format of incident scattering is discussed, and the effect of pseudoscaffering and ray effects on solution accuracy is discussed. The numerical simulation of the radiative transfer in a three-dimensional rectangular furnace was carried out and compared with the area method and the discrete transfer method. The comparison results show that the discrete coordinate method has better accuracy and is a better method for the numerical simulation of radiation heat transfer in the combustion chamber.