计算物理 ›› 1997, Vol. 14 ›› Issue (1): 19-25.
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付汉清1, 常谦顺2
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Fu Hanqing1, Chang Qianshun2
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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
中图分类号:
O241
付汉清, 常谦顺. 用代数多重网格法求解一维分裂格式的Euler方程[J]. 计算物理, 1997, 14(1): 19-25.
Fu Hanqing, Chang Qianshun. Application of Algebraic Multigrid Method to Solve the Splitting Scheme of One-dimensional Euler Equations[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 1997, 14(1): 19-25.
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