Development of a new simulation tool coupling a 2D finite volume overland flow model and a drainage network model
Resumen: Numerical simulation of mixed flows combining free surface and pressurized flows is a practical tool to prevent possible flood situations in urban environments. When dealing with intense storm events, the limited capacity of the drainage network conduits can cause undesirable flooding situations. Computational simulation of the involved processes can lead to better management of the drainage network of urban areas. In particular, it is interesting to simultaneuously calculate the possible pressurization of the pipe network and the surface water dynamics in case of overflow. In this work, the coupling of two models is presented. The surface flow model is based on two-dimensional shallow water equations with which it is possible to solve the overland water dynamics as well as the transformation of rainfall into runoff through different submodels of infiltration. The underground drainage system assumes mostly free surface flow that can be pressurized in specific situations. The pipe network is modeled by means of one-dimensional sections coupled with the surface model in specific regions of the domain, such as drains or sewers. The numerical techniques considered for the resolution of both mathematical models are based on finite volume schemes with a first-order upwind discretization. The coupling of the models is verified using laboratory experimental data. Furthermore, the potential usefulness of the approach is demonstrated using real flooding data in a urban environment.
Idioma: Inglés
DOI: 10.3390/geosciences8080288
Año: 2018
Publicado en: Geosciences (Switzerland) 8, 8 (2018), 288 [19 pp]
ISSN: 2076-3263

Factor impacto SCIMAGO: 0.392 - Earth and Planetary Sciences (miscellaneous) (Q2)

Financiación: info:eu-repo/grantAgreement/ES/MINECO/CGL2015-66114-R
Financiación: info:eu-repo/grantAgreement/ES/MINECO/DI-14-06987
Tipo y forma: Article (Published version)
Área (Departamento): Área Mecánica de Fluidos (Dpto. Ciencia Tecnol.Mater.Fl.)

Creative Commons You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.


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