计算物理 ›› 2012, Vol. 29 ›› Issue (5): 727-732.

• 论文 • 上一篇    下一篇

连续能量蒙特卡罗方法组件均匀化中的临界效应

李满仓1,2, 王侃1, 姚栋2   

  1. 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
  • 收稿日期:2011-11-01 修回日期:2012-02-06 出版日期:2012-09-25 发布日期:2012-09-25
  • 作者简介:满仓(1984-),男,黑龙江,博士生,从事反应堆物理方向的研究,E-mail:lme03@mails.tsinghua.edu.cn
  • 基金资助:
    国家自然科学基金(11175168)资助项目

Critical Effect in Lattice Homogenization via Monte Carlo Method

LI Mancang1,2, WANG Kan1, YAO Dong2   

  1. 1. Department of Engineering Physics, Tsinghua University, Beijing 100084, China;
    2. Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu 610041, China
  • Received:2011-11-01 Revised:2012-02-06 Online:2012-09-25 Published:2012-09-25

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.

关键词: 临界效应, 均匀化, 蒙特卡罗方法, 群常数, BN理论

Abstract: 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 Bl 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.

Key words: critical effect, homogenization, Monte Carlo method, multi-group constants, BN theory

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