Analysis of a conjugated infinite element method for acoustic scattering

Authors:
Jean-Christophe Autrique;Frédéric Magoulès
Affiliations:
LMS International, Interleuvenlaan 70, Researchpark Haasrode Z1, 3001 Leuven, Belgium;Applied Mathematics and Systems Laboratory, Ecole Centrale Paris, Grande Voie des Vignes, 92295 Chatenay Malabry Cedex, France
Venue:
Computers and Structures
Year:
2007

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Abstract

This work is devoted to a study of a conjugated infinite element method for Helmholtz problems in exterior domains. A formulation of this method with Lagrange multipliers defined on (semi-)infinite space is presented and analyzed in a domain decomposition context. The implementation aspects of this method in a parallel industrial acoustic software (SYSNOISE) are described in details. Numerical results show the computational efficiency of this method on acoustic scattering problems.