Abstract: The uniform deterministic discrete method (UDDM) is used to compute the direct exchange areas of zonal analysis in a complex enclosure with participating medium.FOr solving energy matrix equations,the principal variable correction method is adopted,and its principle is described in this paper together with an explanation of its Physical basis.In order to combine the calculations of radiation and convection,a two-level grid is used.The results from this model have shown that a series of calculation methods on radiative heat-exchange in this paper can meet the case of engineering accuracy.

摘要： 实现了用均匀离散射线法计算二维复杂炉型内有非均质参与的辐射直接交换面积．对高次非线性段能量平衡方程组采用了主变量修正法．在解决辐射与对流混合传热的问题上，提出了新的双重网格技术．仿真计算结果表明，本文提出的一系列计算辐射换热的方法能够满足工程精度要求．