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二维中子输运方程的非结构网格离散纵标数值解法 被引量:8

Discrete Ordinates Method for Two-Dimensional Neutron Transport Equation Based on Unstructured-Meshes
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摘要 从一阶中子输运方程出发,对方向变量采用离散纵标法展开,得到一系列关于空间变量的偏微分方程,对这些方程采用最小二乘有限元方法进行离散。编制了二维中子输运方程的非结构网格离散纵标计算程序。对一系列基准问题做了验算,计算结果表明,该方法能用于非结构网格,并具有较高的计算精度。 A discrete ordinates method for two-dimensional neutron transport equation based on unstructured-meshes is derived from the first order neutron transport equation. A set of differential equations about the spatial variables can be obtained. They are solved iteratively by using the least-squares finite element method. A two-dimensional transport calculation code is encoded. The numerical results of some benchmark problems .demonstrate that this method can be used in unstructured-meshes and can give high precision result.
出处 《核动力工程》 EI CAS CSCD 北大核心 2006年第3期1-5,共5页 Nuclear Power Engineering
基金 国家自然科学基金(10475064) 核反应堆系统设计技术国家级重点实验室基金
关键词 离散纵标数值解法 最小二乘法 有限元方法 非结构网格 Discrete ordinates method, Lease-squares, Finite element method, Unstructured-meshes
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参考文献8

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