NECP软件包中NECL子群数据与任意几何共振模块研制  

Design of NECL Subgroup Data Module and Arbitrary Geometry Resonance Calculation Code in Neutronics Evaluation Comprehensive Package

作　　者：贺雷[1] 吴宏春[1] 曹良志[1] 张宏博[1] 

机构地区：[1]西安交通大学核科学与技术学院,陕西西安710049

出　　处：《原子能科学技术》2013年第B06期355-359,共5页Atomic Energy Science and Technology

基　　金：国家自然科学基金资助项目(91126005);863计划资助项目(2013AA051402)

摘　　要：本文基于子群方法对NECP软件包开发了多群数据库模块和子群共振计算模块。采用本实验室开发的二维任意几何输运程序矩阵MOC作为子群共振模块的求解器。使用MCNP与子群程序计算一系列的共振基准题,并比较了两者所计算的无限增殖因数kinf和235 U与238 U的微观截面。结果表明,子群程序对任意几何有良好的适应性和精度,可适用于二维任意几何的共振计算。A multi-group data module and a subgroup resonance calculation code were designed for Neutronics Evaluation Comprehensive Package based on subgroup method in this paper.A self-advanced 2D transport module called matrix MOC was employed as solver in subgroup resonance calculation module.Finally,a series of resonance benchmarks were calculated by MCNP and subgroup code respectively,and the kinf and macro cross section of 235U and 238U by MCNP and subgroup code were compared.The results show that the subgroup code has enough accuracy and adaptability for arbitrary geometries and it＇s suitable for 2D arbitrary resonance calculation.

关 键 词：共振计算 任意几何 子群方法 

分 类 号：TL324[核科学技术—核技术及应用]