130404 20240125162930.0 doi 10.1080/00221686.2016.1143042 sideral 94985 ART-2016-94985 eng Juez, C. (orcid)0000-0002-2985-1023 An efficient GPU implementation for a faster simulation of unsteady bed-load transport 2016 Computational tools may help engineers in the assessment of sediment transport during the decision-making processes. The main requirements are that the numerical results have to be accurate and simulation models must be fast. The present work is based on the 2D shallow water equations in combination with the 2D Exner equation. The resulting numerical model accuracy was already discussed in previous work. Regarding the speed of the computation, the Exner equation slows down the already costly 2D shallow water model as the number of variables to solve is increased and the numerical stability is more restrictive. In order to reduce the computational effort required for simulating realistic scenarios, the authors have exploited the use of Graphics Processing Units in combination with non-trivial optimization procedures. The gain in computing cost obtained with the graphic hardware is compared against single-core (sequential) and multi-core (parallel) CPU implementations in two unsteady cases. Access copy available to the general public Unrestricted info:eu-repo/semantics/openAccess by-nc http://creativecommons.org/licenses/by-nc/3.0/es/ 1.268 2016 WATER RESOURCES 59 / 87 = 0.678 2016 Q3 T3 ENGINEERING, CIVIL 66 / 125 = 0.528 2016 Q3 T2 0.814 2016 Water Science and Technology 2016 Q1 Civil and Structural Engineering 2016 Q2 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Lacasta, A. Universidad de Zaragoza (orcid)0000-0002-1185-8470 Murillo, J. Universidad de Zaragoza (orcid)0000-0002-1386-5543 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 54, 3 (2016), 275-288 J. hydraul. res. JOURNAL OF HYDRAULIC RESEARCH 0022-1686 1465676 http://zaguan.unizar.es/record/130404/files/texto_completo.pdf Postprint 2220534 http://zaguan.unizar.es/record/130404/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:130404 articulos driver 2024-01-25-15:07:53 ARTICLE