连续能量蒙特卡罗方法组件均匀化中的临界效应  

Critical Effect in Lattice Homogenization via Monte Carlo Method

作　　者：李满仓[1,2] 王侃[1] 姚栋[2] 

机构地区：[1]清华大学工程物理系,北京100084 [2]中国核动力研究设计院核反应堆系统设计技术重点实验室,四川成都610041

出　　处：《计算物理》2012年第5期727-732,共6页Chinese Journal of Computational Physics

基　　金：国家自然科学基金(11175168)资助项目

摘　　要：研究蒙特卡罗均匀化中的临界效应,应用BN理论修正临界效应.简化压水堆模型和临界试验装置的验证表明:在连续能量蒙特卡罗方法均匀化中,BN方法很好的考虑了群常数的临界效应,曲率基模成功度量了堆芯的有限性.In practice of homogenization with Monte Carlo method, critical effect is studied and BN theory is applied taking critical effect into account. Fundamental mode with buckling B is used as a measure of finite size. A critical spectrum in solution of fine-group B1 equations is used to correct weighted spectrum for homogenization. A PWR prototype core is examined to verify that the method generates few group constants effectively. In addition, a zero power physical experiment verification is performed. Numerical validations show that BN theory is adequate for critical correction in multi-group constants generation via Monte Carlo method.

关 键 词：临界效应 均匀化 蒙特卡罗方法 群常数 BN理论 

分 类 号：TL329.2[核科学技术—核技术及应用]