In simulations of propagating blast waves the effects of artificial reflections at open boundaries can seriously degrade the accuracy of the computations. In this paper, a boundary condition based on a local approximation by a plane traveling wave is presented. The method yields small artificial ref
Non-reflecting boundary conditions for electromagnetic scattering
โ Scribed by Marcus J. Grote
- Publisher
- John Wiley and Sons
- Year
- 2000
- Tongue
- English
- Weight
- 195 KB
- Volume
- 13
- Category
- Article
- ISSN
- 0894-3370
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โฆ Synopsis
An exact non-re#ecting boundary condition was derived previously for use with the time-dependent Maxwell equations in three space dimensions. Here it is shown how to combine that boundary condition with the variational formulation for use with the "nite element method. The fundamental theory underlying the derivation of the exact boundary condition is reviewed. Numerical examples with the "nite-di!erence time-domain method are presented which demonstrate the high accuracy and con"rm the expected rate of convergence of the numerical method.
๐ SIMILAR VOLUMES
A non-re ecting boundary condition based on the Gauss รฟlter is employed for the determination of scattered potential governed by the Helmholtz equation. A รฟltering layer is used for closing inรฟnite domain calculations. An expression for the re ection coe cient is derived and an optimal รฟltering laye
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