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- W4237839001 abstract "Perfectly matched layers and infinite elements are commonly used for finite element simulations of acoustic waves on unbounded domains. Both involve a volumetric discretization around the periphery of an acoustic mesh, which itself surrounds a structure or domain of interest. Infinite elements have been a popular choice for these problems since the 1970s. Perfectly matched layers are a more recent technology that is gaining popularity due to ease of implementation and effectiveness as an absorbing boundary condition. In this study, we present massively parallel implementations of these two techniques, and compare their performance on a set of representative structural–acoustic problems on exterior domains. We examine the conditioning of the linear systems generated by the two techniques by examining the number of Krylov-iterations needed for convergence to a fixed solver tolerance. We also examine the effects of PML parameters, exterior boundary conditions, and quadrature rules on the accuracy of the solution. [Sandia National Laboratories is a multi-program laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed martin Corporation, for the U.S. Department of Energy’s National Nuclear Security Administration under contract DE-AC04-94AL850000.]" @default.
- W4237839001 created "2022-05-12" @default.
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- W4237839001 date "2014-10-01" @default.
- W4237839001 modified "2023-09-23" @default.
- W4237839001 title "A comparison of perfectly matched layers and infinite elements for exterior Helmholtz problems" @default.
- W4237839001 doi "https://doi.org/10.1121/1.4899724" @default.
- W4237839001 hasPublicationYear "2014" @default.
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