Modelling the impact of dam failure scenarios on flood inundation using SPH

Prakash, Mahesh; Rothauge, Kai; Cleary, Paul W.

doi:10.1016/j.apm.2014.03.011

Cited by 44 publications

(25 citation statements)

References 24 publications

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“…(1) and (2), and the pressure field is calculated on the basis of an additional pseudo-state equation [7]: The pseudo-time derivatives involve a pseudo-density e ρ, which is introduced in Eqs.…”

Section: Governing Equationsmentioning

confidence: 99%

“…Therefore, the prediction of velocities, water levels, and the trend of downstream wave front propagations with accurate times of arrival for the failures of the hydraulic structures is essential for engineers and officials involved with downstream flood prediction, early hazard warning systems, and crisis response [1][2][3]. The important examples for hydraulic problems in civil engineering are the potential risks of failures of levees, dams, reservoirs, and flood management.…”

Section: Introductionmentioning

confidence: 99%

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A free surface flow solver for complex three‐dimensional water impact problems based on the VOF method

Nguyen

Park

2015

Numerical Methods in Fluids

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Summary A three‐dimensional numerical model is developed to analyze free surface flows and water impact problems. The flow of an incompressible viscous fluid is solved using the unsteady Navier–Stokes equations. Pseudo‐time derivatives are introduced into the equations to improve computational efficiency. The interface between the two phases is tracked using a volume‐of‐fluid interface tracking algorithm developed in a generalized curvilinear coordinate system. The accuracy of the volume‐of‐fluid method is first evaluated by the multiple numerical benchmark tests, including two‐dimensional and three‐dimensional deformation cases on curvilinear grids. The performance and capability of the numerical model for water impact problems are demonstrated by simulations of water entries of the free‐falling hemisphere and cone, based on comparisons of water impact loadings, velocities, and penetrations of the body with experimental data. For further validation, computations of the dam‐break flows are presented, based on an analysis of the wave front propagation, water level, and the dynamic pressure impact of the waves on the downstream walls, on a specific container, and on a tall structure. Extensive comparisons between the obtained solutions, the experimental data, and the results of other numerical simulations in the literature are presented and show a good agreement. Copyright © 2015 John Wiley & Sons, Ltd.

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Section: Governing Equationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A free surface flow solver for complex three‐dimensional water impact problems based on the VOF method

Nguyen

Park

2015

Numerical Methods in Fluids

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“…Since then, it has been used in several research areas, e.g. coastal engineering [3][4][5][6][7], flooding forecast [8][9][10][11], solid body transport [12][13][14][15], soil mechanics [16][17][18][19][20], sediment erosion or entrainment processes [21][22][23][24], fastmoving non-Newtonian flows [25][26][27][28][29][30][31][32][33], flows in porous media [34][35][36], solute transport [37][38][39], turbulent flows [40][41][42] and multiphase flows [43][44][45][46][47], not to mention manifold industrial applications (see, for instance [48][49][50]…”

Section: Introductionmentioning

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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“…For example, X. M. Yuan [6] established two-dimension hydrodynamic model to simulate the flood inundating the river way and embankment as well as the gradual progress of flood routing in irrigated area. Meanwhile, the meshless methods, such as particle [7] and SPH [8][9], are still in the research process, resulting in the unstructured grid method [10] being chosen as the main path to establish model of two-dimension flood routing. Onedimension hydrodynamic coupling model and twodimension hydrodynamic coupling model could simulate much faster and calculate more appropriately during the process of flood inrush [11].…”

Section: Introductionmentioning

confidence: 99%

Hei River Flood Risk Analysis Based on Coupling Hydrodynamic Simulation of 1-D and 2-D Simulations

Yang¹,

Feng²

2015

IJHT

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To evaluate the flood risk of Black River efficiently and conveniently, the deluge gradual processing in black river gold basin reservoir is established within the one-dimension model and two-dimension model of hydrodynamic coupling. Triangular unstructured grid is adopted to accommodate height and large span, as well as complex underlying surface of Mountain Rivers. Lateral connection, time synchronization and corresponding coupling space node are applied within coupling of one-dimension model and two-dimension model. The numerical simulation of flood in Black river gold basin reservoir which is in different frequencies is in the framework of established coupling model. As a result, the water depth and distribution of flow field in different time are obtained within the calculation areas. Based on the results of coupling simulation, the flood risk map and the analysis of importance of dam break as well as the risk of flood-hit population proceeded. The results coming from the mentioned simulation could provide basis to alarm of Black River flood and evaluation of disaster loss.

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Modelling the impact of dam failure scenarios on flood inundation using SPH

Cited by 44 publications

References 24 publications

A free surface flow solver for complex three‐dimensional water impact problems based on the VOF method

A free surface flow solver for complex three‐dimensional water impact problems based on the VOF method

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

Hei River Flood Risk Analysis Based on Coupling Hydrodynamic Simulation of 1-D and 2-D Simulations

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