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- W4225995970 abstract "This paper is concerned with a numerical solution to the scattering of a time-harmonic electromagnetic wave by a bounded and impenetrable obstacle in three dimensions. The electromagnetic wave propagation is modeled by a boundary value problem of Maxwell's equations in the exterior domain of the obstacle. Based on the Dirichlet-to-Neumann (DtN) operator, which is defined by an infinite series, an exact transparent boundary condition is introduced and the scattering problem is reduced equivalently into a bounded domain. An a posteriori error estimate based adaptive finite element DtN method is developed to solve the discrete variational problem, where the DtN operator is truncated into a sum of finitely many terms. The a posteriori error estimate takes into account both the finite element approximation error and the truncation error of the DtN operator. The latter is shown to decay exponentially with respect to the truncation parameter. Numerical experiments are presented to illustrate the effectiveness of the proposed method." @default.
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- W4225995970 date "2022-02-18" @default.
- W4225995970 modified "2023-09-27" @default.
- W4225995970 title "An Adaptive Finite Element DtN Method for Maxwell's Equations" @default.
- W4225995970 doi "https://doi.org/10.48550/arxiv.2202.09203" @default.
- W4225995970 hasPublicationYear "2022" @default.
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