原子能科学技术2011，Vol.45Issue(12)：1414-1420,7.
线性源近似的中子输运方程特征线解法
Linear Source Approximation Scheme for Method of Characteristics
摘要
Abstract
Method of characteristics (MOC) for solving neutron transport equation based on unstructured mesh has already become one of the fundamental methods for lattice calculation of nuclear design code system. However, most of MOC codes are developed with flat source approximation called step characteristics (SO scheme, which is another basic assumption for MOC. A linear source (LS) characteristics scheme and its corresponding modification for negative source distribution were proposed. The OECD/NEA C5G7-MOX 2D benchmark and a self-defined BWR mini-core problem were employed to validate the new LS module of PEACH code. Numerical results indicate that the proposed LS scheme employs less memory and computational time compared with SC scheme at the same accuracy.关键词
特征线法/平源近似/线性源近似/C5G7-MOX 2D基准题Key words
method of characteristics/flat source approximation/linear source approximation/C5G7-MOX 2D benchmark分类
能源科技引用本文复制引用
汤春桃..线性源近似的中子输运方程特征线解法[J].原子能科学技术,2011,45(12):1414-1420,7.
