Optimized weak coupling of boundary element and finite element methods for acoustic scattering

[摘要] In this paper we present an optimized weak coupling of boundary element and finite element methods to solve acoustic scattering problems. This weak coupling is formulated as a non-overlapping Schwarz domain decomposition method, where the transmission conditions are constructed through Pade localized approximations of the Dirichlet-to-Neumann maps. The performance of the resulting formulations is analyzed on several three-dimensional examples, with both homogeneous and inhomogeneous scatterers. (C) 2020 Elsevier Inc. All rights reserved.

[发布日期] 2020-11-15

[关键词] Acoustic scattering;Integral equations;Finite element;Coupling;Domain decomposition;Transmission boundary operators