129711 20240109145019.0 doi 10.1016/j.apm.2015.08.016 sideral 93439 ART-2016-93439 eng Morales-Hernández, M. Universidad de Zaragoza (orcid)0000-0001-6961-7250 Conservative 1D-2D coupled numerical strategies applied to river flooding: The Tiber (Rome) 2016 Coupled 1D-2D numerical strategies are presented in this work for their application to fast computation of large rivers flooding. Both 1D and 2D models are built using explicit upwind finite volume schemes, able to deal with wetting-drying fronts. The topography representation is described via cross sections for the 1D model and with quadrilateral/triangular structured/unstructured meshes for the 2D model. The coupling strategies, free of hydraulic structures and tuning parameters, are firstly validated in a laboratory test dealing with a levee break and its flooding into a lateral plane. The numerical results are compared with a fully 2D model as well as with measurements in some gauge points giving satisfactory results. The simulation of a real flooding scenario in the Tiber river near the urban area of Rome (Italy) is then performed. A lateral coupling configuration is provided, in which the flood wave propagation in the main channel is simulated by means of a 1D model and the inundation of the riverside is simulated by means of a 2D model. On the other hand, a frontal coupling, in which the flood wave is simulated in a 1D model first and then it is propagated into a 2D model, is also performed. The flooding extension is almost well captured by all the schemes presented, being the 1D-2D lateral configuration the most confident with speed-ups of around 15x. Access copy available to the general public Unrestricted info:eu-repo/semantics/openAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ 2.35 2016 ENGINEERING, MULTIDISCIPLINARY 20 / 85 = 0.235 2016 Q1 T1 MECHANICS 30 / 133 = 0.226 2016 Q1 T1 MATHEMATICS, INTERDISCIPLINARY APPLICATIONS 19 / 100 = 0.19 2016 Q1 T1 1.139 2016 Modeling and Simulation 2016 Q1 Applied Mathematics 2016 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Petaccia, G. Brufau, P. Universidad de Zaragoza (orcid)0000-0002-0415-0001 García-Navarro, P. Universidad de Zaragoza (orcid)0000-0001-8674-1042 5001 600 Universidad de Zaragoza Dpto. Ciencia Tecnol.Mater.Fl. Área Mecánica de Fluidos 40, 3 (2016), 2087-2105 Appl. math. model. APPLIED MATHEMATICAL MODELLING 0307-904X 5005408 http://zaguan.unizar.es/record/129711/files/texto_completo.pdf Postprint 2316404 http://zaguan.unizar.es/record/129711/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:129711 articulos driver 2024-01-09-13:08:01 ARTICLE