000135156 001__ 135156
000135156 005__ 20240516095249.0
000135156 0247_ $$2doi$$a10.1016/j.advwatres.2024.104716
000135156 0248_ $$2sideral$$a138534
000135156 037__ $$aART-2024-138534
000135156 041__ $$aeng
000135156 100__ $$0(orcid)0000-0003-4444-778X$$aVallés, P.$$uUniversidad de Zaragoza
000135156 245__ $$aA 2D shallow water flow model with 1D internal boundary condition for subgrid-scale topography
000135156 260__ $$c2024
000135156 5060_ $$aAccess copy available to the general public$$fUnrestricted
000135156 5203_ $$aIn this work, a dynamic internal boundary condition is used as subgrid model in a two-dimensional (2D) model based on the shallow water equations in order to model narrow regions in the domain. In this way, computational savings are sought, since it is not necessary to discretize these regions with cells of reduced size. The new internal boundary condition simplifies other works where 1D-2D coupled models were presented, since the 1D model is a subgrid for the 2D mesh, so the coupling between both models is simple and direct. The coupling is performed using mass conservation, simplifying the calculation in the transfer between both models. Test cases are studied to validate the implemented boundary condition, and a mountain catchment as a realistic case. The results obtained with a fully 2D mesh and a 2D mesh with rills in narrow regions are very similar, with a large reduction in computational cost when using rills, both in test cases and in the realistic case. Thus, the use of the implemented internal boundary condition is an effective tool to study regions with narrow regions by reducing the computational cost with little loss of accuracy in the results.
000135156 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc$$uhttp://creativecommons.org/licenses/by-nc/3.0/es/
000135156 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000135156 700__ $$0(orcid)0000-0002-3635-6223$$aFernández-Pato, J.
000135156 700__ $$0(orcid)0000-0001-6961-7250$$aMorales-Hernández, M.$$uUniversidad de Zaragoza
000135156 700__ $$0(orcid)0000-0001-8221-523X$$aEcheverribar, I.
000135156 700__ $$0(orcid)0000-0001-8674-1042$$aGarcía-Navarro, P.$$uUniversidad de Zaragoza
000135156 7102_ $$15001$$2600$$aUniversidad de Zaragoza$$bDpto. Ciencia Tecnol.Mater.Fl.$$cÁrea Mecánica de Fluidos
000135156 773__ $$g189 (2024), 104716 [19 pp.]$$pAdv. water resour.$$tAdvances in Water Resources$$x0309-1708
000135156 8564_ $$s7426919$$uhttps://zaguan.unizar.es/record/135156/files/texto_completo.pdf$$yVersión publicada
000135156 8564_ $$s2727463$$uhttps://zaguan.unizar.es/record/135156/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000135156 909CO $$ooai:zaguan.unizar.es:135156$$particulos$$pdriver
000135156 951__ $$a2024-05-16-08:53:12
000135156 980__ $$aARTICLE