A numerical analysis of generalized Boussinesq-type equation using continuos/discontinuous FEM
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , |
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. |
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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 |
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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 |
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1799133402436206592 |