Flexible GMRES-FFT method for fast matrix solution: application to 3D dielectric bodies electromagnetic scattering
✍ Scribed by R. S. Chen; D. Z. Ding; Z. H. Fan; Edward K. N. Yung; C. H. Chan
- Book ID
- 102384038
- Publisher
- John Wiley and Sons
- Year
- 2004
- Tongue
- English
- Weight
- 265 KB
- Volume
- 17
- Category
- Article
- ISSN
- 0894-3370
- DOI
- 10.1002/jnm.554
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✦ Synopsis
Abstract
In this paper, the electromagnetic wave scattering is analysed by the efficient Krylov subspace iterative fast Fourier transform (FFT) technique in terms of the electric field integral equation (EFIE) for a dielectric body of general shape, inhomogeneity, and anisotropy. However, when the permittivity of the scatter becomes large, the convergence rate of Krylov subspace iterative methods slow down. Therefore, the inner–outer flexible generalized minimum residual method (FGMRES) is used to accelerate the iteration. As a result, nearly 10 times convergence improvement is achieved for high permittivity cases. Copyright © 2004 John Wiley & Sons, Ltd.