计算物理 ›› 1984, Vol. 1 ›› Issue (2): 212-225.

• 论文 • 上一篇    下一篇

多群伴随中子通量积分方程的一种Monte Carlo新解法

黄启晋   

  1. 应用物理与计算数学研究所
  • 收稿日期:1983-12-15 修回日期:1984-07-10 出版日期:1984-12-25 发布日期:1984-12-25

A NEW MONTE CARLO METHOD FOR MULTIGROUP ADJOINT INTERGRAL EQUATION OF NEUTRON FLUX

HWANG QI-GIN   

  1. Institute of Applied Physics and Computational Mathamatics
  • Received:1983-12-15 Revised:1984-07-10 Online:1984-12-25 Published:1984-12-25

摘要: 伴随Monte Carlo方法对计算点通量、辐射环境问题等有其独特的优越性,迄今为止是别的方法所不具备的,但伴随Monte Carlo方法所给出的估计的方差常常是比较大的。本文对多群伴随通量积分方程给出一种降低方差的Monte Carlo解法——"最佳"权重变化因子法。计算结果表明,这种方法可使方差明显减小。

Abstract: Adjoint Monte Carlo Method possess especial superiority for cal-oulating the point flux or radiation environment problem, while the other methods do not possess so far. However, the variance of adjoint Monte carlo method is always large.In this paper we present a new method with reduced variance for multigroup adjoint intergral equation of neutron flux, Namely the method of "the best" changed factor of weight, The calculations show that this method can reduce the variance remarkably.