计算物理 ›› 1997, Vol. 14 ›› Issue (1): 19-25.

• 论文 • 上一篇    下一篇

用代数多重网格法求解一维分裂格式的Euler方程

付汉清1, 常谦顺2   

  1. 1. 北京应用物理与计算数学研究所计算物理实验室, 100088;
    2. 中国科学院应用数学研究所, 北京 100080
  • 收稿日期:1995-05-31 出版日期:1997-01-25 发布日期:1997-01-25
  • 基金资助:
    This project is supported by the National Natural Science Foundation of China and the Foundation of China Academy of Engineering Physics.

Application of Algebraic Multigrid Method to Solve the Splitting Scheme of One-dimensional Euler Equations

Fu Hanqing1, Chang Qianshun2   

  1. 1. Laboratory of Computational Physics, IAPCM, Beij ing 100088;
    2. Insti tute of App lied Mathemati cs, Academia S inica, Beijing 100080
  • Received:1995-05-31 Online:1997-01-25 Published:1997-01-25
  • Supported by:
    This project is supported by the National Natural Science Foundation of China and the Foundation of China Academy of Engineering Physics.

摘要: 提出了代数多重网格法(AMG)的一种新算法。新算法改进了插值公式和粗网格方程,并把它应用到求解一维的分裂格式Euler方程。数值结果表明,对于具有高CFL条件数的Euler方程,代数多重网格法可以求解;对于Gaus-Seidel方法求解不能收敛的代数方程组,代数多重网格法求解可以收敛。新算法改进了代数多重网格法的收敛性和扩展了它的应用范围,数值结果表明了它的有效性和强壮性。

关键词: 分裂格式, 代数多重网格法, Euler方程

Abstract: A new algorithm of algebraic multigrid (AMG)method is proposed.As an important example, the AMG method is applied to solve the splitting scheme of the Euler equations.The equations with high CFL number can be calculated with the AMG method.This example demonstrates that the AMG method can solve the linear algebraic systems of equations unable to be solved by Gauss-Seidel iteration method.This is a new result and extends the range of application of the AMG method.

Key words: splitting scheme, algebraic multigrid method, Euler equations

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