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

JOURNAL OF COMPUTATIONAL PHYSICS

卷:421

Article

Caudron, B.^1,2  Antoine, X.^1,3  Geuzaine, C.² 

[1] Univ Lorraine, CNRS, INRIA, IECL, F-54000 Nancy, France

[2] Univ Liege, Inst Montefiore, B28, B-4000 Liege, Belgium

[3] Thales Def Miss Syst, Valbonne, France

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

DOI  :  10.1016/j.jcp.2020.109737

来源: Elsevier

【 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.

【 授权许可】

Free