两种圆柱几何格林函数节块法的比较  

Comparison Between Two Nodal Green's Function Methods for Cylindrical Geometry

作　　者：施工[1] 杜启新[1] 胡永明[2] 

机构地区：[1]清华大学工程物理系,北京100084 [2]清华大学核能技术设计研究院,北京100084

出　　处：《原子能科学技术》2001年第4期331-336,共6页Atomic Energy Science and Technology

摘　　要：用格林函数节块法求解圆柱几何中子扩散方程时 ,可用平板几何格林函数代替复杂的圆柱几何格林函数。本文将基于平板几何格林函数的圆柱几何格林函数节块法 (RNGFM )与基于贝塞尔函数的圆柱几何格林函数节块法 (CNGFM )进行对比分析。分析结果表明 :RNGFM的优点是公式简单 。The Green's function in Cartesian geometry can be used to replace the complex Green's function in cylindrical geometry when solving the neutron diffusion equation in cylindrical geometry. The nodal Green's function method for cylindrical geometry based on Green's function in Cartesian geometry (RNGFM) and the nodal Green's function method for cylindrical geometry based on Bessel function (CNGFM) are compared. The result indicates that the advantage of RNGFM is the simplicity of formulation, while the iteration process of CNGFM costs less time.

关 键 词：扩散方程 格林函数节块法 圆柱几何 中子扩散 计算方法 核反应堆 

分 类 号：TL329.1[核科学技术—核技术及应用] TL325