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- W1983173668 abstract "This paper concerns the implementation of the perfectly matched layer (PML) absorbing boundary condition in the framework of a mimetic differencing scheme for Maxwell's Equations. We use mimetic versions of the discrete curl operator on irregular logically rectangular grids to implement anisotropic tensor formulation of the the PML. The form of the tensor we use is fixed with respect to the grid and is known to be perfectly transmitting in the continuous case for orthogonal coordinate systems in which the metric is constant, i.e. Cartesian coordinates, and a quasi-PML for cylindrical coordinates. Examples illustrating the effectiveness and long-term stability of the methods are shown for each. These examples demonstrate that the grid-based coordinate implementation of the PML is effective on Cartesian grids, but generates systematic reflections on grids which are orthogonal but non-Cartesian (quasi-PML). On non-orthogonal grids progressively worse performance of the PML is demonstrated. The paper begins with a summary derivation of the anisotropic formulation of the perfectly matched layer and mimetic differencing schemes for irregular logically rectangular grids." @default.
- W1983173668 created "2016-06-24" @default.
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- W1983173668 date "2001-01-01" @default.
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- W1983173668 title "Implementing the Perfectly Matched Layer Absorbing Boundary Condition With Mimetic Differencing Schemes - Abstract" @default.
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- W1983173668 doi "https://doi.org/10.1163/156939301x01345" @default.
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