A numerical analysis of generalized Boussinesq-type equation using continuos/discontinuous FEM

Detalhes bibliográficos
Autor(a) principal: Lopes, Nuno David
Data de Publicação: 2012
Outros Autores: Pereira, P. J. S., Trabucho, L.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.21/5129
Resumo: An improved class of Boussinesq systems of an arbitrary order using a wave surface elevation and velocity potential formulation is derived. Dissipative effects and wave generation due to a time-dependent varying seabed are included. Thus, high-order source functions are considered. For the reduction of the system order and maintenance of some dispersive characteristics of the higher-order models, an extra O(mu 2n+2) term (n ??? N) is included in the velocity potential expansion. We introduce a nonlocal continuous/discontinuous Galerkin FEM with inner penalty terms to calculate the numerical solutions of the improved fourth-order models. The discretization of the spatial variables is made using continuous P2 Lagrange elements. A predictor-corrector scheme with an initialization given by an explicit RungeKutta method is also used for the time-variable integration. Moreover, a CFL-type condition is deduced for the linear problem with a constant bathymetry. To demonstrate the applicability of the model, we considered several test cases. Improved stability is achieved.
id RCAP_852419f71aa88d5a155ac6b74b3f2f9e
oai_identifier_str oai:repositorio.ipl.pt:10400.21/5129
network_acronym_str RCAP
network_name_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository_id_str 7160
spelling A numerical analysis of generalized Boussinesq-type equation using continuos/discontinuous FEMBoussinesq EquationsSurface Water WavesDifferential OperatorsAsymptotic AnalysisContinuousDiscontinuous FEMsPredictor-Corrector and Runge-Kutta SchemesAn improved class of Boussinesq systems of an arbitrary order using a wave surface elevation and velocity potential formulation is derived. Dissipative effects and wave generation due to a time-dependent varying seabed are included. Thus, high-order source functions are considered. For the reduction of the system order and maintenance of some dispersive characteristics of the higher-order models, an extra O(mu 2n+2) term (n ??? N) is included in the velocity potential expansion. We introduce a nonlocal continuous/discontinuous Galerkin FEM with inner penalty terms to calculate the numerical solutions of the improved fourth-order models. The discretization of the spatial variables is made using continuous P2 Lagrange elements. A predictor-corrector scheme with an initialization given by an explicit RungeKutta method is also used for the time-variable integration. Moreover, a CFL-type condition is deduced for the linear problem with a constant bathymetry. To demonstrate the applicability of the model, we considered several test cases. Improved stability is achieved.Wiley-blackwellRCIPLLopes, Nuno DavidPereira, P. J. S.Trabucho, L.2015-09-10T09:33:23Z2012-072012-07-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.21/5129engLOPES, N. D.; PEREIRA, P. J. S., TRABUCHO, L. – A numerical analysis of generalized Boussinesq-type equation using continuos/discontinuous FEM. International Journal for Numerical Methods in Fluids. ISSN: 0271-2091. Vol. 69, nr. 7 (2012), pp. 1186-12180271-209110.1002/fld.2631metadata only accessinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-08-03T09:48:06Zoai:repositorio.ipl.pt:10400.21/5129Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:14:27.169896Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv A numerical analysis of generalized Boussinesq-type equation using continuos/discontinuous FEM
title A numerical analysis of generalized Boussinesq-type equation using continuos/discontinuous FEM
spellingShingle A numerical analysis of generalized Boussinesq-type equation using continuos/discontinuous FEM
Lopes, Nuno David
Boussinesq Equations
Surface Water Waves
Differential Operators
Asymptotic Analysis
Continuous
Discontinuous FEMs
Predictor-Corrector and Runge-Kutta Schemes
title_short A numerical analysis of generalized Boussinesq-type equation using continuos/discontinuous FEM
title_full A numerical analysis of generalized Boussinesq-type equation using continuos/discontinuous FEM
title_fullStr A numerical analysis of generalized Boussinesq-type equation using continuos/discontinuous FEM
title_full_unstemmed A numerical analysis of generalized Boussinesq-type equation using continuos/discontinuous FEM
title_sort A numerical analysis of generalized Boussinesq-type equation using continuos/discontinuous FEM
author Lopes, Nuno David
author_facet Lopes, Nuno David
Pereira, P. J. S.
Trabucho, L.
author_role author
author2 Pereira, P. J. S.
Trabucho, L.
author2_role author
author
dc.contributor.none.fl_str_mv RCIPL
dc.contributor.author.fl_str_mv Lopes, Nuno David
Pereira, P. J. S.
Trabucho, L.
dc.subject.por.fl_str_mv Boussinesq Equations
Surface Water Waves
Differential Operators
Asymptotic Analysis
Continuous
Discontinuous FEMs
Predictor-Corrector and Runge-Kutta Schemes
topic Boussinesq Equations
Surface Water Waves
Differential Operators
Asymptotic Analysis
Continuous
Discontinuous FEMs
Predictor-Corrector and Runge-Kutta Schemes
description An improved class of Boussinesq systems of an arbitrary order using a wave surface elevation and velocity potential formulation is derived. Dissipative effects and wave generation due to a time-dependent varying seabed are included. Thus, high-order source functions are considered. For the reduction of the system order and maintenance of some dispersive characteristics of the higher-order models, an extra O(mu 2n+2) term (n ??? N) is included in the velocity potential expansion. We introduce a nonlocal continuous/discontinuous Galerkin FEM with inner penalty terms to calculate the numerical solutions of the improved fourth-order models. The discretization of the spatial variables is made using continuous P2 Lagrange elements. A predictor-corrector scheme with an initialization given by an explicit RungeKutta method is also used for the time-variable integration. Moreover, a CFL-type condition is deduced for the linear problem with a constant bathymetry. To demonstrate the applicability of the model, we considered several test cases. Improved stability is achieved.
publishDate 2012
dc.date.none.fl_str_mv 2012-07
2012-07-01T00:00:00Z
2015-09-10T09:33:23Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.21/5129
url http://hdl.handle.net/10400.21/5129
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv LOPES, N. D.; PEREIRA, P. J. S., TRABUCHO, L. – A numerical analysis of generalized Boussinesq-type equation using continuos/discontinuous FEM. International Journal for Numerical Methods in Fluids. ISSN: 0271-2091. Vol. 69, nr. 7 (2012), pp. 1186-1218
0271-2091
10.1002/fld.2631
dc.rights.driver.fl_str_mv metadata only access
info:eu-repo/semantics/openAccess
rights_invalid_str_mv metadata only access
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Wiley-blackwell
publisher.none.fl_str_mv Wiley-blackwell
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
_version_ 1799133402436206592