摘要
预处理共轭梯度法是求解大型稀疏线性方程组的极为有效的迭代法．本文改进了对称逐步超松驰预处理共轭梯度法（ＳＳＯＲＰＣＧ法）的迭代格式，可节省计算量８％～５０％，并给出应用ＳＳＯＲＰＣＧ法求解有限元方程组时的几个关键子程序．
The preconditioned conjugated gradient method(PCG) is a very efficient iterative method for solving large sparse linear equations.This paper improves the iterative format of the symmetric successive overrelaxation(SSOR) PCG method,as a result the computation is reduced by 8%～50%.This paper also presents some key subroutines for application of the SSOR PCG method to the solution of finite element equations.
出处
《河海大学学报（自然科学版）》
CAS
CSCD
1998年第3期112--11,共1页
Journal of Hohai University(Natural Sciences)
基金
水利部水利技术开发基金资助项目
关键词
有限元方程组
程序设计
预处理
共轭梯度法
SSOR PCG method
improved iterative format
finite element equations
programme design
