计算物理 ›› 2005, Vol. 22 ›› Issue (6): 18-22.

• 研究论文 • 上一篇    下一篇

一类三维等代数结构面剖分下的代数多重网格算法

舒适1, 黄云清1, 阳莺2, 蔚喜军3, 肖映雄4   

  1. 1. 湘潭大学数学与计算科学学院, 湖南 湘潭 411105;
    2. 中国科学院数学与系统科学研究院, 计算数学与科学工程计算研究所, 北京 100080;
    3. 北京应用物理与计算数学研究所, 计算物理实验室, 北京 100088;
    4. 湘潭大学土木工程与力学学院, 湖南 湘潭 411105
  • 收稿日期:2004-07-20 修回日期:2005-01-21 出版日期:2005-11-25 发布日期:2005-11-25
  • 作者简介:舒适(1962-),男,湖南,教授,博导,从事多重网格与区域分解方面的教学与科研工作.
  • 基金资助:
    计算物理实验室基金;国家863高技术惯性约束聚变主题和NSAF(编号:10376031)资助项目

A Class of Algebraic Multigrid Algorithms with Three-Dimensional Equal Algebraic Structures

SHU Shi1, HUANG Yun-qing1, YANG Ying2, YU Xi-jun3, XIAO Ying-xiong4   

  1. 1. School of Mathematics and Computational Science, Xiangtan University, Xiangtan 411105, China;
    2. Institute of Computional Mathematics and Science/Engineering Computing, Academy of Mathematics and System Sciences, CAS, Beijing 100080, China;
    3. Institute of Applied Physics and Computational Mathematics, Beijing 100088, China;
    4. Civil Engineering and Mechanics College, Xiangtan University, Xiangtan 411105, China
  • Received:2004-07-20 Revised:2005-01-21 Online:2005-11-25 Published:2005-11-25

摘要: 对一类等代数结构面的三维非结构网格剖分,针对光滑变系数和各向异性系数的偏微分方程,给出两种非结构代数多重网格算法,数值试验表明算法的有效性和健壮性.

关键词: 代数多重网格法, 三维非结构网格, 各向异性

Abstract: Two kinds of algebraic multigrid (AMG) algorithms with three-dimensional equal algebraic structures are constructed on the basis of a two-dimensional coarsing technique.The AMG method and the corresponding algebraic multigrid-preconditioned CG method are applied to elliptic boundary value problems with smooth coefficients and anisotropic problems.Numerical results show that the AMG algorithm is efficient and robust.

Key words: algebraic multigrid method, three-dimensional unstructured grid, anisotropy

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