应用不连续因子修正的六角形解析节块方法  

Analytic Function Expansion Nodal Method for Hexagonal Geometry Corrected by Discontinuity Factors

作　　者：倪东洋[1] 咸春宇[1] 

机构地区：[1]中国核动力研究设计院核反应堆系统设计技术国家级重点实验室,成都610041

出　　处：《核动力工程》2010年第2期1-5,共5页Nuclear Power Engineering

摘　　要：在六角形解析节块方法中引入不连续因子,对该方法进行改进研究,并研制了分析程序HANDF和HANDF-C。应用该程序对UO2和MOX燃料组件组成的基准题进行了计算,结果表明,改进后的方法能够有效地提高反应堆堆芯(特别是非均匀性较强的堆芯)功率分布和有效增殖因子的计算精度。Analytic function expansion nodal method for hexagonal geometry is improved,by introducing the discontinuity factors based on the analytic function expansion nodal method,and the programs FEMHEX-DF and FEMHEX-DFH have been developed.This paper has calculated two benchmark problems with UO2 and MOX fuel assemblies by these programs,and the numerical results confirm that the improved method can increase the computational accuracy of the core power distributions and keff effectively,especially to the heterogeneous core.

关 键 词：不连续因子 六角形节块 解析节块方法 解析基函数 中子扩散方程 

分 类 号：TL329.2[核科学技术—核技术及应用]