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上海电力大学学报:2001,17(1):16-19
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最佳双松弛因子迭代法的存在条件
(1.上海电力学院基础部, 上海 200090;2.上海交通大学 应用数学系, 上海 200030)
On Conditions of Iteration Method with Two Optimal Relaxation Factors
(1.Dept. of Basic Science, Shanghai University of Electric Power, Shanghai 200090, China;2.Dept. Appl. Math, Shanghai Jiaotong University, Shanghai 200030, China)
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投稿时间:2001-01-15    
中文摘要: 对于大型线性代数方程组AX=b,通常采用单松弛因子进行超松弛迭代.作者在进行汽轮发电机氢内冷转子三维温度场的计算中,发现采用双松弛因子迭代比单松弛因子迭代速度更快.在深入研究的基础上,本文证明了在某种条件下,双松弛因子迭代矩阵的谱半径小于单松弛因子迭代矩阵的谱半径.算例表明这种迭代格式的有效性。
Abstract:For a large scale linear equations AX = b,this paper proves that using two relaxation factors would be better than conventional SOR iteration with single relaxation factor under some conditions. Some examples show the effectiveness of the scheme. The authors used two relaxation factors to calculate the 3D steady temperature distribution in a hydrogen inner-cooled turbogenerator rotor and got very good results.
文章编号:20010104     中图分类号:    文献标志码:
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引用文本:
唐永建,向隆万.最佳双松弛因子迭代法的存在条件[J].上海电力大学学报,2001,17(1):16-19.
TANG Yong-jian,XIANG Long-wan.On Conditions of Iteration Method with Two Optimal Relaxation Factors[J].Journal of Shanghai University of Electric Power,2001,17(1):16-19.