计算物理 ›› 2008, Vol. 25 ›› Issue (1): 1-6.

• 研究论文 •    下一篇

辐射输运菱形差分SN方程的扩散综合加速方法

李双贵1,2, 冯庭桂1   

  1. 1. 北京应用物理与计算数学研究所, 北京 100088;
    2. 中国工程物理研究院研究生部, 北京 100088
  • 收稿日期:2007-02-08 修回日期:2007-05-21 出版日期:2008-01-25 发布日期:2008-01-25
  • 作者简介:李双贵(1976-),女。湖南衡阳,助研,博士生,从事辐射输运计算方法与数值模拟工作,北京8009信箱14分箱100088.
  • 基金资助:
    国家863高技术惯性约束聚变主题;国家重点基础研究项目(2005CB321703);国家自然科学基金(10476002);计算物理实验室基金资助项目

Diffusion-synthetic Acceleration Method for Diamond-differenced Discrete-ordinates Radiative Transfer Equations

LI Shuanggui1,2, FENG Tinggui1   

  1. 1. Institute of Applied Physics and Computational Mathematics, Beijing 100088, China;
    2. Graduate School of China Academy of Engineering Physics, Beijing 100088, China
  • Received:2007-02-08 Revised:2007-05-21 Online:2008-01-25 Published:2008-01-25

摘要: 讨论辐射输运菱形差分SN方程的源迭代加速方法,在一维情形下给出与输运算子离散相容的线性多频灰体加速计算格式.数值算例表明该加速算法是健壮有效的.

关键词: 辐射输运, 扩散综合加速, 菱形差分SN方程, 线性多频灰体加速

Abstract: A consistent linear multifrequency-grey acceleration scheme is developed to accelerate the iterative convergence speed of diamonddifferenced multigroup radiative transfer equations. A difference scheme of acceleration equation is obtained directly by applying discrete P1 approximation to differenced SN equations. Numerical examples show that the method is effective and robust.

Key words: radiative transfer, diffusion-synthetic acceleration, diamond-differenced discrete-ordinates equations, linear multifrequeneygrey acceleration

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