000075856 001__ 75856 000075856 005__ 20210930085402.0 000075856 0247_ $$2doi$$a10.1051/e3sconf/20184006007 000075856 0248_ $$2sideral$$a108660 000075856 037__ $$aART-2018-108660 000075856 041__ $$aeng 000075856 100__ $$0(orcid)0000-0001-8221-523X$$aEcheverribar, I.$$uUniversidad de Zaragoza 000075856 245__ $$aNumerical simulation of 2D real large scale floods on GPU: The Ebro River 000075856 260__ $$c2018 000075856 5060_ $$aAccess copy available to the general public$$fUnrestricted 000075856 5203_ $$aModern flood risk management and mitigation plans incorporate the presence of numerical models that are able to assess the response of the system and to help in the decision-making processes. The shallow water system of equations (SWE) is widely used to model free surface flow evolution in river flooding. Although 1D models are usually adopted when simulating long rivers due to their computational efficiency, 2D models approximate better the behaviour in floodplains of meandering rivers using a fine mesh which implies unaffordable computations in real-world applications. However, the advances on parallelization methods accelerate computation making 2D models competitive. In particular, GPU technology offers important speed-ups which allow fast simulations of large scale scenarios. In this work, an example of the scope of this technology is presented. Several past flood events have been modelled using GPU. The physical domain (middle part of the Ebro River in Spain) has a extent of 477 km2, which gives rise to a large computational grid. The steps followed to carry out the numerical simulation are detailed, as well as the comparison between numerical results and observed flooded areas reaching coincidences up to 87.25 % and speed enhancements of 1-h of simulation time for 1-day flood event. These results lead to the feasible application of this numerical model in real-time simulation tools with accurate and fast predictions useful for flood management. 000075856 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/ 000075856 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion 000075856 700__ $$0(orcid)0000-0001-6961-7250$$aMorales-Hernández, M.$$uUniversidad de Zaragoza 000075856 700__ $$0(orcid)0000-0002-0415-0001$$aBrufau, P.$$uUniversidad de Zaragoza 000075856 700__ $$0(orcid)0000-0001-8674-1042$$aGarcía-Navarro, P.$$uUniversidad de Zaragoza 000075856 7102_ $$15001$$2600$$aUniversidad de Zaragoza$$bDpto. Ciencia Tecnol.Mater.Fl.$$cÁrea Mecánica de Fluidos 000075856 773__ $$g40 (2018), 06007 [8 pp]$$pE3S web conf.$$tE3S web of conferences$$x2555-0403 000075856 8564_ $$s201822$$uhttps://zaguan.unizar.es/record/75856/files/texto_completo.pdf$$yVersión publicada 000075856 8564_ $$s63609$$uhttps://zaguan.unizar.es/record/75856/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada 000075856 909CO $$ooai:zaguan.unizar.es:75856$$particulos$$pdriver 000075856 951__ $$a2021-09-30-08:25:49 000075856 980__ $$aARTICLE