Year: 2021
Author: Labarca Ignacio, Hiptmair Ralf
Communications in Computational Physics, Vol. 30 (2021), Iss. 4 : pp. 985–1008
Abstract
Time-domain acoustic scattering problems in two dimensions are studied. The numerical scheme relies on the use of the Convolution Quadrature (CQ) method to reduce the time-domain problem to the solution of frequency-domain Helmholtz equations with complex wavenumbers. These equations are solved with the method of fundamental solutions (MFS), which approximates the solution by a linear combination of fundamental solutions defined at source points inside (outside) the scatterer for exterior (interior) problems. Numerical results show that the coupling of both methods works efficiently and accurately for multistep and multistage based CQ.
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Journal Article Details
Publisher Name: Global Science Press
Language: English
DOI: https://doi.org/10.4208/cicp.OA-2020-0249
Communications in Computational Physics, Vol. 30 (2021), Iss. 4 : pp. 985–1008
Published online: 2021-01
AMS Subject Headings: Global Science Press
Copyright: COPYRIGHT: © Global Science Press
Pages: 24
Keywords: Acoustic wave scattering convolution quadrature method of fundamental solutions.