Simulating Flows with SPH: Recent Developments and Applications

Viccione, Giacomo; Bovolin, Vittorio; Carratelli, Eugenio Pugliese

doi:10.5772/26132

Cited by 5 publications

(4 citation statements)

References 30 publications

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“…Recent comprehensive reviews and related applications of the SPH method are given in [84][85][86][87][88][89]. Governing equations describing the motion of fluids are usually given as a set of partial differential equations (PDEs).…”

Section: Sph Fundamentalsmentioning

confidence: 99%

Free-Surface Flow Simulations with Smoothed Particle Hydrodynamics Method using High-Performance Computing

Altomare¹,

Viccione²,

Tagliafierro³

et al. 2018

Computational Fluid Dynamics - Basic Instruments and Applications in Science

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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 10 9 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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Section: Sph Fundamentalsmentioning

confidence: 99%

Free-Surface Flow Simulations with Smoothed Particle Hydrodynamics Method using High-Performance Computing

Altomare¹,

Viccione²,

Tagliafierro³

et al. 2018

Computational Fluid Dynamics - Basic Instruments and Applications in Science

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“…See [21,26,29,30] for up-to-date reviews and related applications. SPH is a mesh-free Lagrangian method based on computing particles discretizing the evolving domain.…”

Section: The Wcsph Modelmentioning

confidence: 99%

“…Lagrangian [21], Eulerian [22] or mixed [23] numerical methods have been extensively developed and applied as well. In [24] the impact process resulting from the interaction of breaking waves with a vertical wall was numerically solved by means of a Finite Difference (FD) scheme, based on the Volume of Fluid (VOF) method [25].…”

Section: Introductionmentioning

confidence: 99%

A Numerical Investigation of Liquid Impact on Planar Surfaces.

Viccione¹,

Bovolin²,

Carratelli³

2016

Proceedings of the VII European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS Congress 2016)

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Abstract. The impact of a free surface liquid flow on planar surfaces is a common occurrence and a challenging issue in many research fields. There are many situations in science and technology where this field of study finds related applications: the falling objects on a liquid surface, sloshing dynamics, flow run-up and overtopping, the action of train waves on maritime structures. Under certain circumstances, the impact process may result into high, spatially localized pressure peaks, thus inducing dangerous solicitations. The present work focuses on some relevant computational aspects of the fluid impact on inclined planar surfaces, making use of the Weakly Compressible Smoothed Particle Hydrodynamics (WCSPH) Lagrangian technique. With reference to the early stages of the impact process, pressure distribution is described as function of the incident wave's features and the angle of incidence of the solid surface assumed. Results are then discussed and compared with the corresponding ones obtained via Eulerian software.

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“…Just to mention some meaningful examples, related studies concern the analysis of the interaction between fluids and solid [1,2] or porous interfaces [3][4][5], the assessment of the solid transport, either of bed or suspended or both types [6][7][8], sea waves [9,10], granular flow movements [11,12], Although the effectiveness of experimental studies has been demonstrated by several investigations, the search for numerical solutions [13] is considered as a valuable alternative, as well as a supporting option [12], because it is cost-effective, easily adaptable to the variation of operating condition, more and more convenient for the endless increase of computer power. Numerical methods, either Lagrangian [14], Eulerian [15] or mixed [16] have been extensively applied over the last century as practical tools to give response to engineering and scientific problems. Among Lagrangian types, an emerging method, known as Smoothed Particle Hydrodynamics [17,18], eventually coupled with others to exploit related advantages as in [19,20], has been applied since the last two decades, see for instance [21,22].…”

Section: Introductionmentioning

confidence: 99%