Toeplitz-type approximations to the Hadamard integral operator and their applications to electromagnetic cavity problems
Toeplitz-type approximations to the Hadamard integral operator and their applications to electromagnetic cavity problems
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Hadamard 积分算子的 Toeplitz 型近似及其在电磁腔问题中的应用
DOI:
10.1016/j.apnum.2006.11.003
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发表时间:
2008-02
影响因子:
2.8
通讯作者:
Wu, Jiming
中科院分区:
文献类型:
--
作者:
Wang, Yingxi;Li, Wen;Sun, Weiwei;Wu, Jiming
In this paper, we present five Toeplitz-type schemes for the Hadamard finite-part integral operator. These discrete schemes are of Toeplitz or nearly Toeplitz structure, which gives many advantages in developing fast linear solvers for numerical solution of intego-differential equations. Two examples are presented to confirm our theoretical analysis of approximations to the Hadamard finite-part integrals and to show the accuracy of schemes for solving integral equations with a hypersingular kernel. Finally, we apply our algorithms for electromagnetic scattering from cavities. Numerical results show that these algorithms are efficient.
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