Please use this identifier to cite or link to this item: http://repositorio.lnec.pt:8080/jspui/handle/123456789/1012192
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dc.contributor.authorFernandes, J. N.pt_BR
dc.date.accessioned2019-12-10T17:18:18Zpt_BR
dc.date.accessioned2020-01-16T10:28:36Z-
dc.date.available2019-12-10T17:18:18Zpt_BR
dc.date.available2020-01-16T10:28:36Z-
dc.date.issued2019-05pt_BR
dc.identifier.urihttp://repositorio.lnec.pt:8080/jspui/handle/123456789/1012192-
dc.description.abstractDuring flood events, the overbank flow is rather common in alluvial valleys. The so-called compound channel flow is characterized by the interaction between the deeper and faster main channel flow and the shallower and slower floodplain flow. The flow structure becomes much more complex than in a single channel. In the shear layer formed in a region near the interface, a lateral momen- tum exchange between the main channel and the floodplains and the secondary currents due to the non-isotropic turbulence lead to a 3D flow structure. Despite the availability of 2D and 3D flow models that may solve this question, 1D methods are often preferred due to the less amount of parameters required and to the shorter processing time. In the present paper, a new method to compute flow discharge in compound channels is proposed namely by incorporating the apparent shear stress in the Manning roughness. The method is calibrated and validated taking into account stage discharge relationships in several compound channel facilities.pt_BR
dc.language.isoengpt_BR
dc.publisherLREC - Laboratório Regional de Engenharia Civilpt_BR
dc.rightsrestrictedAccesspt_BR
dc.subjectFloodpt_BR
dc.subjectCompound channelpt_BR
dc.subjectFloodplainpt_BR
dc.titleIncorporating apparent shear stress in the roughness to improve the discharge prediction in overbank flowspt_BR
dc.typeworkingPaperpt_BR
dc.description.pages6ppt_BR
dc.identifier.localPico, Açorespt_BR
dc.description.sectorDHA/NREpt_BR
dc.identifier.conftitleNatHaz19 - Hydrological Riskspt_BR
dc.contributor.peer-reviewedNAOpt_BR
dc.contributor.academicresearchersNAOpt_BR
dc.contributor.arquivoNAOpt_BR
Appears in Collections:DHA/NRE - Comunicações a congressos e artigos de revista

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