dc.creator | Escalante Sánchez, Cipriano | es |
dc.creator | Fernández Nieto, Enrique Domingo | es |
dc.creator | Morales de Luna, Tomás | es |
dc.creator | Narbona Reina, Gladys | es |
dc.date.accessioned | 2021-06-01T10:01:07Z | |
dc.date.available | 2021-06-01T10:01:07Z | |
dc.date.issued | 2017 | |
dc.identifier.citation | Escalante Sánchez, C., Fernández Nieto, E.D., Morales de Luna, T. y Narbona Reina, G. (2017). A two-layer shallow water model for bedload sediment transport: convergence to Saint-Venant-Exner model. ArXiv.org, arXiv:1711.03592 | |
dc.identifier.uri | https://hdl.handle.net/11441/111266 | |
dc.description.abstract | A two-layer shallow water type model is proposed to describe bedload sediment
transport. The upper layer is lled by water and the lower one by sediment. The key
point falls on the de nition of the friction laws between the two layers, which are a
generalization of those introduced in Fern andez-Nieto et al. (ESAIM: M2AN, 51:115-
145, 2017). This de nition allows to apply properly the two-layer shallow water model
for the case of intense and slow bedload sediment transport. Moreover, we prove
that the two-layer model converges to a Saint-Venant-Exner system (SVE) including
gravitational e ects when the ratio between the hydrodynamic and morphodynamic
time scales is small. The SVE with gravitational e ects is a degenerated nonlinear
parabolic system. This means that its numerical approximation is very expensive
from a computational point of view, see for example T. Morales de Luna et al. (J. Sci.
Comp., 48(1): 258{273, 2011). In this work, gravitational e ects are introduced into
the two-layer system without such extra computational cost. Finally, we also consider
a generalization of the model that includes a non-hydrostatic pressure correction for
the
uid layer and the boundary condition at the sediment surface. Numerical tests
show that the model provides promising results and behave well in low transport rate
regimes as well as in many other situations. | es |
dc.description.sponsorship | Ministerio de Economía y Competitividad MTM 2015-70490-C2-1-R | es |
dc.description.sponsorship | Ministerio de Economía y Competitividad MTM 2015-70490-C2-2-R | es |
dc.format | application/pdf | es |
dc.format.extent | 27 | es |
dc.language.iso | eng | es |
dc.publisher | Cornell University | es |
dc.relation.ispartof | ArXiv.org, arXiv:1711.03592 | |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.title | A two-layer shallow water model for bedload sediment transport: convergence to Saint-Venant-Exner model | es |
dc.type | info:eu-repo/semantics/article | es |
dcterms.identifier | https://ror.org/03yxnpp24 | |
dc.type.version | info:eu-repo/semantics/publishedVersion | es |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es |
dc.contributor.affiliation | Universidad de Sevilla. Departamento de Matemática Aplicada I (ETSII) | es |
dc.relation.projectID | MTM 2015-70490-C2-1-R | es |
dc.relation.projectID | MTM 2015-70490-C2-2-R | es |
dc.relation.publisherversion | https://arxiv.org/abs/1711.03592 | es |
dc.journaltitle | ArXiv.org | es |
dc.publication.issue | arXiv:1711.03592 | es |
dc.contributor.funder | Ministerio de Economía y Competitividad (MINECO). España | es |