| SSOR预处理技术在二维电磁特性TDFEM分析中的应用 |
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| 引用本文： | 何小祥,刘梅林.SSOR预处理技术在二维电磁特性TDFEM分析中的应用[J].南京航空航天大学学报,2006,38(6):670-673. |
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| 作者姓名： | 何小祥 刘梅林 |
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| 作者单位： | 南京航空航天大学信息科学与技术学院,南京,210016 |
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| 摘 要： | 将对称超松弛(Symmetric successive over-re laxation,SSOR)预处理的共轭梯度法(Con jugate-gradient,CG)和双共轭梯度法(BICG)应用于时域有限元方法(Time doma in finitee lemen tmethod,TDFEM)中,研究了CG,SSOR-PCG,B ICG以及SSOR-PB ICG的收敛特性。数值结果表明,通过SSOR预处理技术,TDFEM的计算效率可以提高数倍,从而证明了所给方法的高效性。
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| 关 键 词： | 时域有限元方法(TDFEM) 对称超松弛(SSOR)方法 预处理技术 计算电磁学 |
| 文章编号： | 1005-2615(2006)06-0670-04 |
| 收稿时间： | 2006-04-20 |
| 修稿时间： | 2006-05-30 |
Application of SSOR Preconditioning Technique in TDFEM for 2-D Electromagnetic Analysis |
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| He Xiaoxiang,Liu Meilin.Application of SSOR Preconditioning Technique in TDFEM for 2-D Electromagnetic Analysis[J].Journal of Nanjing University of Aeronautics & Astronautics,2006,38(6):670-673. |
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| Authors: | He Xiaoxiang Liu Meilin |
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| Abstract: | Symmetric successive over-relaxation(SSOR) preconditioned conjugate-gradient(CG) method and Bi-conjugate-gradient(BICG) method are applied to time domain finite element method(TDFEM).As a result,the equation by solving every time step of TDFEM is accelerated,and the efficiency of TDFEM is improved.Finally,the low efficiency of TDFEM for electromagnetic analysis is overcame.The convergences of CG,SSOR-PCG,BICG and SSOR-PBICG in TDFEM are investigated.Numerical results demonstrate that CG and BICG solvers can be accelerated several times faster with SSOR preconditioner,thus the high efficiency of SSOR in TDFEM is shown. |
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| Keywords: | time domain finite element method(TDFEM) symmetrical successive overrelaxation(SSOR) precondition technique computational electromagnetics(CEM) |
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