【摘要】 使用粗网有限差分方法 ,同时利用解析方法通过非线性迭代对差分近似进行修正 ,解两群扩散方程。数值计算结果证明 ,这种非线性方法具有较高的精度 ,并且较传统方法计算效率成倍提高更多还原

【Abstract】 An analytical nodal method is developed for the solution of two group diffusion equation. The method uses coarse mesh finite difference method as the solution strategy, with the corrective coefficients introduced to modify the coupling relationships. The corrective coefficients are determined using an analytical method and are updated during the nonlinear iterations. Numerical results demonstrate that this nonlinear method has comparable high accuracy and, compared to a conventional method, considerably improves computational efficiency.更多还原