用于两群瞬态中子扩散计算的节块方法

A Nodal Method for Two-Group Transient Neutron Diffusion Calculations

采用非线性迭代节块方法作为空间近似方法 ,同时使用隐式差分和时间积分方法作为时间域近似方法 ,求解两群多维瞬态中子扩散方程 ,并给出基准问题的计算结果。

A nodal method is developed for the solution of the two group multidimensional transient neutron diffusion equations.The method employs a nonlinear iteration nodal method for spatial discretization and uses implicit form of finite difference method and the time integrated method for temporal discretization.The results for the benchmark problems are given,which demonstrate the effectiveness of the proposed method.