摘要
对以子群法与特征线法相结合的中子共振自屏计算方法进行了研究,编制了共振计算程序(SGMOC);程序采用WIMSD格式的多群数据库。数值验证表明,SGMOC的计算结果与MCNP程序计算结果吻合良好,具有较高的计算精度与几何通用性。以SGMOC为基础,对子群法共振干涉效应修正计算的两种方法进行了研究分析。条件概率法对UO2燃料栅元无限增殖系数(kinf)计算的修正约为0.0003～0.0018;借助NJOY程序的方法对UO2燃料栅元kinf计算的修正约为0.0002～0.0013。
We combined the subgroup method and the method of characteristics for neutron resonance self-shielding calculation,and programmed a resonance calculation code SGMOC.This code is based on the WIMSD format multi-group data library.The numerical results of SGMOC are in good agreement with those of MCNP,and thus SGMOC has high calculation precision and geometry flexibility.Based on the SGMOC code,we studied two modification methods for the resonance interference effect calculation.The conditional probability method had a correction effect about 30~180pcm for kinf calculation of UO2 fuel cell.The method by virtue of NJOY code had a correction effect about 20~130pcm for kinf calculation of UO2 fuel cell.
出处
《核动力工程》
EI
CAS
CSCD
北大核心
2010年第S2期5-8,20,共5页
Nuclear Power Engineering
关键词
子群法
特征线法
SGMOC
共振干涉效应
条件概率
Subgroup method,The method of characteristics,SGMOC,Resonance interference effect,Conditional probability
