计算物理 ›› 2001, Vol. 18 ›› Issue (5): 423-428.

• 论文 • 上一篇    下一篇

基于亏量方程的多重网格解法

黄朝晖, 常谦顺   

  1. 中国科学院数学与系统科学研究院, 北京 100080
  • 收稿日期:2001-01-15 修回日期:2001-05-09 出版日期:2001-09-25 发布日期:2001-09-25
  • 作者简介:黄朝晖(1970-),maie,Engincer,Ph D,numerical analysis and computational physics,P,O,Box 2734,Beijing 100080.
  • 基金资助:
    The work is partly supported by the National Natural Science Foundation of China(No.199310 30 )

MULTIGRID SOLVER BASED ON THE DEFECT EQUATION

HUANG Zhao-hui, CHANG Qian-shun   

  1. Academy of Mathematics and System Sciences, Chinese Academy of Sciences, Beijing 100080, P R China
  • Received:2001-01-15 Revised:2001-05-09 Online:2001-09-25 Published:2001-09-25
  • Supported by:
    The work is partly supported by the National Natural Science Foundation of China(No.199310 30 )

摘要: 基于亏量方程提出了一种生成多重网格插值公式的新方法,新插值公式充分利用了粗网格的信息,因而具有更高的精度.对Poisson方程,各向异性方程,双调和方程,甚至三维问题的数值试验表明,新插值公式改进了多重网格法的渐近收敛速度,节省了存储空间及计算时间.

关键词: 多重网格, 亏量方程, 插值公式, 渐近收敛速度

Abstract: A new approach for producing the MG interpolatory formula is proposed on the basis of the defect equation. This new interpolatory formula makes full use of information of coarser grids, and thus has higher accuracy. Numerical experiments for Poisson equation, anisotropic equation, biharmonic equation, and even 3D problem show that the new interpolatory formula improves the asymptotic convergence rate, and reduces the storage capacity and computational time for the AMG method.

Key words: multigrid, defect equation, interpolatory formula, asymptotic convergence rate

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