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Free-surface flow simulations with smoothed particle hydrodynamics method using high-performance computing Altomare, C.; Viccione, G.; Tagliafierro, B.; Bovolin, V.; Dominguez, J.M.L.; Crespo, A.J.C. (2018). Free-surface flow simulations with smoothed particle hydrodynamics method using high-performance computing, in: Ionescu, A. (Ed.) Computational fluid dynamics: basic instruments and applications in science. pp. 73-100. https://dx.doi.org/10.5772/intechopen.71362 In: Ionescu, A. (Ed.) (2018). Computational fluid dynamics: basic instruments and applications in science. InTech: Rijeka. ISBN 978-953-51-3790-0. XIII, 396 pp. https://dx.doi.org/10.5772/intechopen.68688, meer

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Beschikbaar in	Auteurs
Waterbouwkundig Laboratorium: Open Repository 312241 [ OWA ] Waterbouwkundig Laboratorium: Onderzoek ONDE 03361 [312242]

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Trefwoord

Equations > Navier-Stokes equations

Author keywords

SPH; HPC; Free-surface flows; Lagrangian techniques

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Auteurs		Top
Altomare, C., meer Viccione, G. Tagliafierro, B.	Bovolin, V. Dominguez, J.M.L. Crespo, A.J.C.

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Abstract

Today, the use of modern high-performance computing (HPC) systems, such as clusters equipped with graphics processing units (GPUs), allows solving problems with resolutions unthinkable only a decade ago. The demand for high computational power is certainly an issue when simulating free-surface flows. However, taking the advantage of GPU’s parallel computing techniques, simulations involving up to 109 particles can be achieved. In this framework, this chapter shows some numerical results of typical coastal engineering problems obtained by means of the GPU-based computing servers maintained at the Environmental Physics Laboratory (EPhysLab) from Vigo University in Ourense (Spain) and the Tier-1 Galileo cluster of the Italian computing centre CINECA. The DualSPHysics free package based on smoothed particle hydrodynamics (SPH) technique was used for the purpose. SPH is a meshless particle method based on Lagrangian formulation by which the fluid domain is discretized as a collection of computing fluid particles. Speedup and efficiency of calculations are studied in terms of the initial interparticle distance and by coupling DualSPHysics with a NLSW wave propagation model. Water free-surface elevation, orbital velocities and wave forces are compared with results from experimental campaigns and theoretical solutions.

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