SPH Simulation of shallow water wavepropagation

Chowdhury, S. De; Sannasiraj, S. A.

doi:10.1016/j.oceaneng.2012.12.036

Cited by 13 publications

(4 citation statements)

References 17 publications

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“…Initially, the method was developed for simulating astrophsysical phenomena, implying large-scale self-gravitating gaseous systems in absence of boundary conditions. Later, utilizing the special properties of SPH, the method has been successfully applied for the simulation of both solid and fluid phases by Monaghan and Gray et al [4,5]), making SPH recently an increasingly applied theory in ocean engineering and several other fields (see [6][7][8]). Although the theory behind the variable smoothing lengths of the particles in SPH had been long since formulated by Gingold [9] and Monaghan [10], in order for the resolution in a specific region to be increased, particles need to be properly inserted and removed from the computational domain.…”

Section: Introductionmentioning

confidence: 99%

Particle coalescing with angular momentum conservation in SPH simulations

Havasi-Tóth

2020

Computers & Fluids

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The present work introduces a simple, yet effective particle coalescing procedure for two-dimensional SPH simulations with spatially varying resolution.In addition to the regular conservation properties of former algorithms concerning the mass and linear momentum, the current model provides the exact conservation of the angular momentum as well. The detailed discussion of the coalescing method is followed by its verification through a frozen Taylor-Green vortex example with gradually derefined particle configuration. As a demonstration of the applicability of the proposed technique, a typical weakly compressible dam break simulation and an evolution of a two-dimensional Taylor-Green vortex pattern with local refinement are presented and comparisons are made with analytical and experimental data.

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Section: Introductionmentioning

confidence: 99%

Particle coalescing with angular momentum conservation in SPH simulations

Havasi-Tóth

2020

Computers & Fluids

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“…Long time repeatability is of the essence here. SPH flow solvers has been used for different studies ranging from wave propagation (De Chowdhury and Sannasiraj, 2013) to other non-linear free surface flows such as wave overtopping (Gomez-Gesteira et al, 2005) or interactions with coastal structures (De Chowdhury et al (2017) and Didier et al (2014)). This work contributes to the validation of very non-linear flow models, dealing with periodic wave breaking, fragmentation and sprays, The model is built upon the general purpose SPH solver implemented in the open-source code Du-alSPHysics (Gomez-Gesteira et al, 2012), which provides GP-GPU acceleration, hence allowing for highly resolved flow simulations (Vacondio et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

SPH simulation of periodic wave breaking in the surf zone - A detailed fluid dynamic validation

et al. 2019

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The estimation of wave breaking and run-up on sloped beaches is a relevant issue in different coastal engineering applications. The present study stresses on the capabilities of a Smoothed Particle Hydrodynamics (SPH) solver, with optimal numerical and physical parameters, to accurately simulate the complex flow field in the surf zone and run-up region. Numerical results are compared with high quality experimental measurements of the local flow field in terms of instantaneous and phase averaged values. The selected test case regards the propagation and breaking of regular non-linear waves on a smooth impermeable plane slope. The comparison is based on a complete set of 128 consecutive non-linear regular waves. The level of accuracy of the numerical results and the ability of the model to reproduce the periodic flow in the surf-zone is provided. Current limitations and uncertainty sources are identified and discussed to guide future developments.

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“…Standing and regular waves were modelled by Antuono et al in [10] and the damping of viscous gravity waves in SPH were validated to analytical solutions by M. Antuono and A. Colagrossi [11]. Solitary waves over non-uniform bottoms and wave-splitting mechanics were investigated by Li et al [12] and S. De Chowdhury and S.A. Sannasiraj in [13].…”

Section: Introductionmentioning

confidence: 99%

Modeling Free-surface Solitary Waves with Smoothed Particle Hydrodynamics

Tóth

2017

Period. Polytech. Civil Eng.

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IntroductionThe first known observation of a solitary wave was reported by Scott Russell in 1834 [1]. He studied the behaviour of the solitary waves in laboratory while the first theoretical model explaining them appeared in 1895 by Korteweg and de Vries [2]. The idea of the Korteweg-de Vries (KdV) theory is based on slightly dispersive shallow water waves whose dispersion is balanced by nonlinear effects so that the wave preserves its amplitude and shape during the propagation on arbitrary distances. The exact solution of the KdV equation describes the shape and propagation speed of a soliton.Although the KdV theory can be considered a first order approximation and its solution describes real solitary waves well, higher order approximations can also be constituted. In During the past two decades, owing to its attractive properties and prominent capabilities in modeling free surface flows, SPH became one of the most popular particle based numerical schemes in many different areas of engineering applications, like modeling coastal waves or tsunamies.

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SPH Simulation of shallow water wavepropagation

Cited by 13 publications

References 17 publications

Particle coalescing with angular momentum conservation in SPH simulations

Particle coalescing with angular momentum conservation in SPH simulations

SPH simulation of periodic wave breaking in the surf zone - A detailed fluid dynamic validation

Modeling Free-surface Solitary Waves with Smoothed Particle Hydrodynamics

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