本文提出了漫射辐射换热角系数的有限差分数值计算方法,并用FORTRAN算法语言编写出通用计算机程序。 本方法可计算三维空间任意两个二次曲面之间,具有第三个二次曲面遮挡干扰的平均角系数。 本方法的准确度为±2％以内,主要取决于因变量(投影平面)的选取和格子点大小的确定,为验证本方法的准确度,文中举出了四个例子。 In this paper, a finite difference method of numerical calculation of heat transfer coefficient of diffuse radiation is proposed, and a general computer program is compiled by FORTRAN language. The method can calculate the average angle coefficient between any two quadric surfaces in the three-dimensional space with the third quadric surface occlusion interference. The accuracy of this method is within ± 2%, which mainly depends on the selection of dependent variable (projection plane) and the size of lattice points. To verify the accuracy of this method, four examples are given in this paper.