Incompressible SPH (ISPH) with fast Poisson solver on a GPU

Chow, A.; Rogers, Benedict D.; Lind, Steven; Stansby, Peter

doi:10.1016/j.cpc.2018.01.005

Cited by 83 publications

(64 citation statements)

References 55 publications

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“…The standard SPH adopts this strategy. Another approach solves for fluid pressure implicitly by a twostep algorithm and imposes the fluid incompressibility [20,22,42] and CPM adopts the latter approach. In the predictor step, the temporary particle velocities ( * v ) and positions ( * r ) are computed by neglecting the pressure gradient term:…”

Section: Cpm Methodologymentioning

confidence: 99%

Consistent Particle Method simulation of solitary wave impinging on and overtopping a seawall

Luo

Reeve

Shao

et al. 2019

Engineering Analysis with Boundary Elements

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Tsunamis are among the most destructive natural hazards and can cause massive damage to the coastal communities. This paper presents a first numerical study on the tsunami-like solitary wave impinging and overtopping based on the mesh-free Consistent Particle Method (CPM). The distinct feature of CPM is that it computes the spatial derivatives in a way consistent with the Taylor series expansion and hence achieves good numerical consistency and accuracy. This largely alleviates the spurious pressure fluctuation that is a key issue for the particle method. Validated by the benchmark example of solitary wave impact on a seawall, the CPM model is shown to be able to capture the highly deformed breaking wave and the impact pressure associated with wave impinging and overtopping. Using the numerical model, a parametric study of the effect of seawall cross-sectional geometry on the characteristics of wave overtopping is conducted. It is found that a higher water level can lead to much more intensive overtopping volume and kinetic energy of the overtopping flow, which implies that the coastal areas are at higher risk as the sea level rises. For the purpose of engineering interest, a simple and practical way to estimate the intensity of a real tsunami is presented in terms of the volume and energy of the bulge part of the incident wave.

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Section: Cpm Methodologymentioning

confidence: 99%

Consistent Particle Method simulation of solitary wave impinging on and overtopping a seawall

Luo

Reeve

Shao

et al. 2019

Engineering Analysis with Boundary Elements

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“…The use of OpenCL allows the use of NVIDIA or AMD GPUs and the same code can be executed on multi-core CPUs. GPU implementations of ISPH can be found in [117][118][119]. The work in [117] presented a solver written in OpenCL that could be executed on a CPU or GPU and the performance of both architectures was compared.…”

Section: High Performance Computing Solutions For Complex Hydraulic Ementioning

confidence: 99%

“…The work in [118] showed an ISPH code to perform realistic fluid simulations in real time, so some simplifications were applied to increase the speed of execution. The work in [119] implemented an optimized GPU solver starting from [111] and achieved a speedup close to 5 against CPU simulations with 16 threads. GPU implementations of MPS can also be found in [120] for 2D and in [121] for 3D free surface simulations.…”

Section: High Performance Computing Solutions For Complex Hydraulic Ementioning

confidence: 99%

SPH Modeling of Water-Related Natural Hazards

Manenti

Wang

Domínguez

et al. 2019

Water

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This paper collects some recent smoothed particle hydrodynamic (SPH) applications in the field of natural hazards connected to rapidly varied flows of both water and dense granular mixtures including sediment erosion and bed load transport. The paper gathers together and outlines the basic aspects of some relevant works dealing with flooding on complex topography, sediment scouring, fast landslide dynamics, and induced surge wave. Additionally, the preliminary results of a new study regarding the post-failure dynamics of rainfall-induced shallow landslide are presented. The paper also shows the latest advances in the use of high performance computing (HPC) techniques to accelerate computational fluid dynamic (CFD) codes through the efficient use of current computational resources. This aspect is extremely important when simulating complex three-dimensional problems that require a high computational cost and are generally involved in the modeling of water-related natural hazards of practical interest. The paper provides an overview of some widespread SPH free open source software (FOSS) codes applied to multiphase problems of theoretical and practical interest in the field of hydraulic engineering. The paper aims to provide insight into the SPH modeling of some relevant physical aspects involved in water-related natural hazards (e.g., sediment erosion and non-Newtonian rheology). The future perspectives of SPH in this application field are finally pointed out.

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“…Such refined algorithms (numerical integration of hydrodynamic equations) provide a high order of accuracy in space and time [1,3,11,13,16]. Another way is to increase the efficiency of parallel computing where the main aim is the massive transition to graphics processors (GPUs) [2,5,7].…”

Section: Introductionmentioning

confidence: 99%

Lagrange-Eulerian method for numerical integration of the gas dynamics equations: parallel implementation on GPUs

Khrapov¹,

Хоперсков²,

Khoperskov³

2019

J. Phys.: Conf. Ser.

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We describe a new CSPH-TVD method for numerical integration of hydrodynamical equations. The method is based on combined Lagrange-Euler approaches, and it has been devoted to simulations of hydrodynamical flows in various astrophysical systems with nonhomogeneous gravitational fields and the non-steady boundary between gas and vacuum. A numerical algorithm was tested on analytical solutions for various problems, and a detailed comparison of our method with the MUSCL scheme is also presented in the paper. It is shown that the CSPH-TVD scheme has a second order of accuracy for smooth solutions (well-balanced approach) and it provides reliable solutions in the vicinity of strong shock waves and at the open gas-vacuum interfaces. We also study the effectiveness of parallel implementations of CSPH-TVD method for various NVIDIA Tesla K20/40/80, P100 graphics processors 1 .

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Incompressible SPH (ISPH) with fast Poisson solver on a GPU

Cited by 83 publications

References 55 publications

Consistent Particle Method simulation of solitary wave impinging on and overtopping a seawall

Consistent Particle Method simulation of solitary wave impinging on and overtopping a seawall

SPH Modeling of Water-Related Natural Hazards

Lagrange-Eulerian method for numerical integration of the gas dynamics equations: parallel implementation on GPUs

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