Time-harmonic solution for acousto-elastic interaction with controllability and spectral elements

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dc.contributor.author Mönkölä, Sanna
dc.date.accessioned 2012-10-12T07:07:30Z
dc.date.available 2012-10-12T07:07:30Z
dc.date.issued 2010
dc.identifier.citation Mönkölä, S. (2010). Time-harmonic solution for acousto-elastic interaction with controllability and spectral elements. Journal of Computational and Applied Mathematics, 234, 1904-1911. fi
dc.identifier.issn 0377-0427
dc.identifier.other TUTKAID_38658
dc.identifier.uri http://hdl.handle.net/123456789/39969
dc.description.abstract The classical way of solving the time-harmonic linear acousto-elastic wave problem is to discretize the equations with finite elements or finite differences. This approach leads to large-scale indefinite complex-valued linear systems. For these kinds of systems, it is difficult to construct efficient iterative solution methods. That is why we use an alternative approach and solve the time-harmonic problem by controlling the solution of the corresponding time dependent wave equation. In this paper, we use an unsymmetric formulation, where fluid-structure interaction is modeled as a coupling between pressure and displacement. The coupled problem is discretized in space domain with spectral elements and in time domain with central finite differences. After discretization, exact controllability problem is reformulated as a least-squares problem, which is solved by the conjugate gradient method. fi
dc.language.iso eng
dc.publisher Elsevier
dc.relation.ispartof Journal of Computational and Applied Mathematics
dc.rights © Elsevier. This is an author's final draft version of an article whose final and definitive form has been published by Elsevier.
dc.subject.other fluid-structure interaction en
dc.subject.other acoustic waves en
dc.subject.other elastic waves en
dc.subject.other coupled problem en
dc.subject.other time-harmonic solution en
dc.subject.other spectral element method en
dc.subject.other controllability en
dc.subject.other conjugate gradient algorithm en
dc.title Time-harmonic solution for acousto-elastic interaction with controllability and spectral elements
dc.type Article en
dc.identifier.urn URN:NBN:fi:jyu-201210102635
dc.subject.kota 113
dc.contributor.laitos Department of Mathematical Information Technology en
dc.contributor.laitos Tietotekniikan laitos fi
dc.contributor.oppiaine tietotekniikka fi
jyx.tutka.volyme 234
jyx.tutka.pagetopage 1904-1911
dc.type.uri http://purl.org/eprint/type/SubmittedJournalArticle
dc.identifier.doi 10.1016/j.cam.2009.08.040
dc.date.updated 2012-10-10T03:30:04Z
dc.description.version Author's Final draft
eprint.status http://purl.org/eprint/type/status/PeerReviewed

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