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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Kantartzis, N.V. Petropoulos, P.G. Tsiboukis, T.D. |
| Copyright Year | 1965 |
| Abstract | A new absorption performance evaluation of the exact Grote and Keller boundary conditions versus a generalization of the unsplit PML for the FDTD method in spherical coordinates, is thoroughly conducted in this paper. The attenuation capabilities of the latter absorber are further enhanced via novel approaches concerning its termination by the Bayliss-Turkei ABCs, in conjunction with higher-order finite difference schemes in the layer. Moreover, an expanded curvilinear mesh algorithm for the interior of the PML is introduced in order to achieve the required reflection with a reduced number of cells. Numerical vector spherical-wave simulations investigate the convergence properties in respect to grid resolution of both ABCs, the evolution of various error norms, and their behavior as a function of distance from the scatterer, with the 3-D curvilinear FDTD method. Numerical results demonstrate that both conditions are remarkably robust and highly accurate, while the proposed developments provide significant savings in the computational cost. |
| Sponsorship | IEEE Magnetics Society |
| Starting Page | 1418 |
| Ending Page | 1421 |
| Page Count | 4 |
| File Size | 506116 |
| File Format | |
| ISSN | 00189464 |
| Volume Number | 35 |
| Issue Number | 3 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 1999-05-01 |
| Publisher Place | U.S.A. |
| Access Restriction | One Nation One Subscription (ONOS) |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Absorption Finite difference methods Boundary conditions Attenuation Reflection Numerical simulation Convergence of numerical methods Scattering Robustness Computational efficiency |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering |
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