A Fast Preconditioned Iterative Algorithm for the Electromagnetic Scattering from a Large Cavity
A Fast Preconditioned Iterative Algorithm for the Electromagnetic Scattering from a Large Cavity
复制标题
大腔体电磁散射的快速预条件迭代算法
DOI:
10.1007/s10915-012-9580-0
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发表时间:
2012-11
影响因子:
2.5
通讯作者:
乔中华
中科院分区:
文献类型:
--
作者:
李郴良;乔中华
In this paper, a fast preconditioned Krylov subspace iterative algorithm is proposed for the electromagnetic scattering from a rectangular large open cavity embedded in an infinite ground plane. The scattering problem is described by the Helmholtz equation with a nonlocal artificial boundary condition on the aperture of the cavity and Dirichlet boundary conditions on the walls of the cavity. Compact fourth order finite difference schemes are employed to discretize the bounded domain problem. A much smaller interface discrete system is reduced by introducing the discrete Fourier transformation in the horizontal and a Gaussian elimination in the vertical direction, presented in Bao and Sun (SIAM J. Sci. Comput. 27:553, 2005). An effective preconditioner is developed for the Krylov subspace iterative solver to solve this interface system. Numerical results demonstrate the remarkable efficiency and accuracy of the proposed method.
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DOI:
10.1016/j.jcp.2005.11.007
发表时间:
2006-07
期刊:
J. Comput. Phys.
影响因子:
--
作者:
A. Wood
通讯作者:
A. Wood
影响因子:
0.9
作者:
Feng, Xiufang;Li, Zhilin;Qiao, Zhonghua
通讯作者:
Qiao, Zhonghua
影响因子:
0.9
作者:
H. Ammari;G. Bao;A. Wood
通讯作者:
H. Ammari;G. Bao;A. Wood
影响因子:
5.7
作者:
Z. Xiang;T. Chia
通讯作者:
Z. Xiang;T. Chia
DOI:
10.1016/j.apnum.2004.01.009
发表时间:
2003-06
期刊:
Mathematics eJournal
影响因子:
--
作者:
Y. Erlangga;C. Vuik;C. Oosterlee
通讯作者:
Y. Erlangga;C. Vuik;C. Oosterlee