Near-shore sediment dynamics computation under the combined effects of waves and currents
Autor(a) principal: | |
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Data de Publicação: | 2002 |
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/10316/4025 https://doi.org/10.1016/S0965-9978(01)00045-X |
Resumo: | An integrated computational structure for non-cohesive sediment-transport and bed-level changes in near-shore regions has been developed. It is basically composed of: (1) three hydrodynamic sub-models; (2) a dynamic equation for the sediment transport (of the Bailard-type); and (3) an extended sediment balance equation. A shallow-water approximation, or Saint-Venant-type model, is utilized for the computation and up-to-date field currents, initially and after each characteristic computational period. A Berkhoff-type wave model allows us to determine the wave characteristics in deep water and intermediate water conditions. These computations make it possible to define a smaller modeling area for a non-linear wave-current model of the Boussinesq-type, including breaking waves, friction effects and improved dispersion wave characteristics. Bed topography is updated after each wave period, or a multiple of this, called computational sedimentary period. Applicability of the computational structure is confirmed through laboratory experiments. Practical results of a real-world application obtained around the S. Lourenço fortification, Tagus estuary (Portugal), with the intention of preventing the destruction of the Bugio lighthouse, are shown. |
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Near-shore sediment dynamics computation under the combined effects of waves and currentsDeep-waterShallow-waterWave-current interactionExtended Boussinesq equationsSediment-transport modelAn integrated computational structure for non-cohesive sediment-transport and bed-level changes in near-shore regions has been developed. It is basically composed of: (1) three hydrodynamic sub-models; (2) a dynamic equation for the sediment transport (of the Bailard-type); and (3) an extended sediment balance equation. A shallow-water approximation, or Saint-Venant-type model, is utilized for the computation and up-to-date field currents, initially and after each characteristic computational period. A Berkhoff-type wave model allows us to determine the wave characteristics in deep water and intermediate water conditions. These computations make it possible to define a smaller modeling area for a non-linear wave-current model of the Boussinesq-type, including breaking waves, friction effects and improved dispersion wave characteristics. Bed topography is updated after each wave period, or a multiple of this, called computational sedimentary period. Applicability of the computational structure is confirmed through laboratory experiments. Practical results of a real-world application obtained around the S. Lourenço fortification, Tagus estuary (Portugal), with the intention of preventing the destruction of the Bugio lighthouse, are shown.http://www.sciencedirect.com/science/article/B6V1P-44NM35Y-4/1/5d4ee1fe921aba0096ad08f76d2017f12002info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleaplication/PDFhttp://hdl.handle.net/10316/4025http://hdl.handle.net/10316/4025https://doi.org/10.1016/S0965-9978(01)00045-XengAdvances in Engineering Software. 33:1 (2002) 37-48Carmo, J. S. Antunes doSeabra-Santos, F. J.info: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:RCAAP2021-10-26T08:17:44Zoai:estudogeral.uc.pt:10316/4025Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:57:15.110916Repositório 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 |
Near-shore sediment dynamics computation under the combined effects of waves and currents |
title |
Near-shore sediment dynamics computation under the combined effects of waves and currents |
spellingShingle |
Near-shore sediment dynamics computation under the combined effects of waves and currents Carmo, J. S. Antunes do Deep-water Shallow-water Wave-current interaction Extended Boussinesq equations Sediment-transport model |
title_short |
Near-shore sediment dynamics computation under the combined effects of waves and currents |
title_full |
Near-shore sediment dynamics computation under the combined effects of waves and currents |
title_fullStr |
Near-shore sediment dynamics computation under the combined effects of waves and currents |
title_full_unstemmed |
Near-shore sediment dynamics computation under the combined effects of waves and currents |
title_sort |
Near-shore sediment dynamics computation under the combined effects of waves and currents |
author |
Carmo, J. S. Antunes do |
author_facet |
Carmo, J. S. Antunes do Seabra-Santos, F. J. |
author_role |
author |
author2 |
Seabra-Santos, F. J. |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Carmo, J. S. Antunes do Seabra-Santos, F. J. |
dc.subject.por.fl_str_mv |
Deep-water Shallow-water Wave-current interaction Extended Boussinesq equations Sediment-transport model |
topic |
Deep-water Shallow-water Wave-current interaction Extended Boussinesq equations Sediment-transport model |
description |
An integrated computational structure for non-cohesive sediment-transport and bed-level changes in near-shore regions has been developed. It is basically composed of: (1) three hydrodynamic sub-models; (2) a dynamic equation for the sediment transport (of the Bailard-type); and (3) an extended sediment balance equation. A shallow-water approximation, or Saint-Venant-type model, is utilized for the computation and up-to-date field currents, initially and after each characteristic computational period. A Berkhoff-type wave model allows us to determine the wave characteristics in deep water and intermediate water conditions. These computations make it possible to define a smaller modeling area for a non-linear wave-current model of the Boussinesq-type, including breaking waves, friction effects and improved dispersion wave characteristics. Bed topography is updated after each wave period, or a multiple of this, called computational sedimentary period. Applicability of the computational structure is confirmed through laboratory experiments. Practical results of a real-world application obtained around the S. Lourenço fortification, Tagus estuary (Portugal), with the intention of preventing the destruction of the Bugio lighthouse, are shown. |
publishDate |
2002 |
dc.date.none.fl_str_mv |
2002 |
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/10316/4025 http://hdl.handle.net/10316/4025 https://doi.org/10.1016/S0965-9978(01)00045-X |
url |
http://hdl.handle.net/10316/4025 https://doi.org/10.1016/S0965-9978(01)00045-X |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Advances in Engineering Software. 33:1 (2002) 37-48 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
aplication/PDF |
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 |
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1799133860598906880 |