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提出一种数值近似求解反照率的计算方法。在节块扩散计算中，用该方法求得的反照率边界条件，替代压水堆中的反射层。该方法数学模型简单，且能够处理各种几何边界条件，包括“Ｌ”型和“”型拐角。一些基准题的数值结果表明，以新的边界条件进行的堆芯功率和临界计算所得结果与精确表示反射层的节块计算结果符合良好。
A numerical method for calculating albedo is proposed. In the nodal diffusion calculation, the albedo boundary conditions obtained by this method are used to replace the reflection layer in the PWR. The mathematical model of this method is simple and can handle various geometric boundary conditions, including “L” type and “” type corner. The numerical results of some benchmark questions indicate that the results of core power and critical calculation with new boundary conditions are in good agreement with the nodal calculations that accurately represent the reflector.