Comparison of surface tension generation methods in smoothed particle hydrodynamics for dynamic systems

Arai, Erin; Tartakovsky, Alexandre M.; Holt, R. Glynn; Grace, Sheryl M.; Ryan, Emily M.

doi:10.1016/j.compfluid.2020.104540

Cited by 10 publications

(2 citation statements)

References 58 publications

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“…The simulation set-up is presented in Figure 2. Three dimension-less parameters (two independent) are generally used to described the system: Finally, a convergence study in space have been led to justify the choice of ∆x, which was chosen equal to 10 −5 m. The choice of the spacial step is indeed critical since the spacial convergence of SPH can be guaranteed only if both ∆x and h tends towards 0 while the number of neighboring particles increase towards the infinite [37]. The later implies that the ratio R c /∆x should be increased while decreasing ∆x which is very complicated to do for obvious CPU time reasons.…”

Section: Simulation Set-upmentioning

confidence: 99%

“…Indeed, the convergence condition for SPH method requires (1) ∆x and the smoothing length h tends towards 0 and (2) the numbers of neighboring particles tends towards the infinity. It implies that the ratio of the cutting length by the spacial discretization R c /∆x should be increased while decreasing ∆x [37,42].…”

Section: Appendix a Simulations Parameters And Post-processing Datamentioning

confidence: 99%

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SPH 3D simulation of jet break-up driven by external vibrations

et al. 2023

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This article presents a SPH study of a liquid jet break-up, the control of which is improved by applying external vibrations. The numerical method is simple: a standard weakly compressible SPH approach where the gaseous phase is neglected. The density calculation near the free surface is based on an improved geometrical method, which was previously published by the authors.The later allows one to increase the stability of the simulations and thus to widen the range of parameters (We and Oh) compared with previous studies based on SPH. The simulation results show the capability of this approach to simulate the jet break-up phenomenon accurately. This study is a step forward, towards the simulation of liquid atomization in industrial conditions with the SPH method.

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Section: Simulation Set-upmentioning

confidence: 99%

Section: Appendix a Simulations Parameters And Post-processing Datamentioning

confidence: 99%

SPH 3D simulation of jet break-up driven by external vibrations

et al. 2023

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Smoothed particle hydrodynamics modelling of multiphase flows: an overview

Pozorski,

Olejnik

2023

Acta Mech

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Smoothed particle hydrodynamics (SPH) is a meshless, particle-based approach that has been increasingly applied for modelling of various fluid-flow phenomena. Concerning multiphase flow computations, an advantage of the Lagrangian SPH over Eulerian approaches is that the advection step is straightforward. Consequently, the interphasial surface can be explicitly determined from the positions of particles representing different phases; therefore, there is no need for the interface reconstruction step. In this review paper, we briefly recall the basics of the SPH approach, and in particular the physical modelling and numerical implementation issues. We also mention the weaknesses of the approach and some remedies to overcome them. Then, we demonstrate the applicability of SPH to selected interfacial flow cases, including the liquid column break-up, gas–liquid flow regimes in a channel capturing the transitions between them and the wetting phenomena. Concerning the two-fluid modelling, it is illustrated with sediment transport in the presence of surface waves. Various other applications are briefly recalled from the rich and growing literature on the subject, followed by a tentative list of challenges in multiphase SPH.

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Surface tension and wettability calculation using density gradient potential in a physically consistent particle method

Kondo

Matsumoto

2021

Computer Methods in Applied Mechanics and Engineering

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Comparison of surface tension generation methods in smoothed particle hydrodynamics for dynamic systems

Cited by 10 publications

References 58 publications

SPH 3D simulation of jet break-up driven by external vibrations

SPH 3D simulation of jet break-up driven by external vibrations

Smoothed particle hydrodynamics modelling of multiphase flows: an overview

Surface tension and wettability calculation using density gradient potential in a physically consistent particle method

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