计算物理 ›› 2006, Vol. 23 ›› Issue (5): 505-510.

• 论文 •    下一篇

δ函数SN方法求解含各向异性散射输运方程的本征值问题

杨波, 李茂生   

  1. 北京应用物理与计算数学研究所, 北京 100088
  • 收稿日期:2005-04-19 修回日期:2005-10-24 出版日期:2006-09-25 发布日期:2006-09-25
  • 作者简介:杨波(198l-),男,江苏赣榆,硕士,从事粒子与原子物理方面的研究.
  • 基金资助:
    计算物理实验室基金(51479050105ZW0906)资助项目

Dirac Delta Function Discrete Ordinate Method for a One-Speed Transport Equation with Anisotropic Scatterings

YANG Bo, LI Mao-sheng   

  1. Institute of Applied Physics and Computational Mathematics, Beijing 100088, China
  • Received:2005-04-19 Revised:2005-10-24 Online:2006-09-25 Published:2006-09-25

摘要: 将角通量分解成一个δ函数和一个低阶函数,分别采用解析方法和求积组来计算源项.利用δ函数SN方法,计算了平几何条件下含各向异性散射单速输运方程的临界问题.分析和数值结果表明,采用数量较少的离散方向,能够达到较高计算精度.

关键词: 离散纵标法, 各向异性散射, δ函数

Abstract: With the Dirac delta function discrete ordinate method,a one-speed time-dependent transport equation with anisotropy scatterings is studied in a slab.The scattering function is assumed a combination of linearly anisotropic and strongly forward-backward scattering.The angular flux is split into a delta function and a low order function.The source term is obtained by integrating the delta function and quadrature the low order function.Numerical results for criticality eigenvalues are obtained and tabulated with different scattering parameters including extreme regions.

Key words: discrete ordinate method, anisotropy scattering, Dirac delta function

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