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Erschienen in:
2002 | OriginalPaper | Buchkapitel
A Blended Fictitious/Real Domain Decomposition Method for Partially Axisymmetric Exterior Helmholtz Problems with Dirichlet Boundary Conditions
verfasst von : Ulrich Hetmaniuk, Charbel Farhat
Erschienen in: Recent Developments in Domain Decomposition Methods
Verlag: Springer Berlin Heidelberg
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We blend a fictitious domain decomposition method and the FETI-H substructuring algorithm to construct a fast finite element based solver for exterior Helmholtz problems characterized by partially axisymmetric and sound-soft scatterers. We highlight the computational merits of this solver, and demonstrate between one and two orders of magnitude reduction of the CPU time associated with the straightforward solution of such exterior Helmholtz problems.