fitting green’s function fft acceleration applied to anisotropic dielectric scattering problems
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ID: 252208
2015
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Abstract
A volume integral equation based fast algorithm using the Fast Fourier Transform of fitting Green’s function (FG-FFT) is proposed in this paper for analysis of electromagnetic scattering from 3D anisotropic dielectric objects. For the anisotropic VIE model, geometric discretization is still implemented by tetrahedron cells and the Schaubert-Wilton-Glisson (SWG) basis functions are also used to represent the electric flux density vectors. Compared with other Fast Fourier Transform based fast methods, using fitting Green’s function technique has higher accuracy and can be applied to a relatively coarse grid, so the Fast Fourier Transform of fitting Green’s function is selected to accelerate anisotropic dielectric model of volume integral equation for solving electromagnetic scattering problems. Besides, the near-field matrix elements in this method are used to construct preconditioner, which has been proved to be effective. At last, several representative numerical experiments proved the validity and efficiency of the proposed method.
| Reference Key |
chen2015internationalfitting
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|---|---|
| Authors | ;Shu-Wen Chen;Feng Lu;Yao Ma |
| Journal | american journal of physiology endocrinology and metabolism |
| Year | 2015 |
| DOI |
10.1155/2015/123739
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