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

Luo, Min; Reeve, Dominic E.; Shao, Songdong; Karunarathna, Harshinie; Lin, Pengzhi; Cai, Huayang

doi:10.1016/j.enganabound.2019.03.012

Cited by 36 publications

(12 citation statements)

References 42 publications

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“…However, to date, only a few studies have investigated the efficiency of solving the SPH-SWEs model. Vacondio et al [34][35][36][37] have developed the serial code to solve the SWEs by using the SPH method and have made an open source version called SWE-SPHysics, which has been optimized and adapted based on the hydrodynamics investigated by other researchers [38][39][40][41][42][43][44][45][46][47][48][49][50][51][52]. Despite continuous progress, there is still a limitation related to the computational efficiency when the number of particles to simulate is very large, and this aspect still needs to be improved.…”

Section: Introductionmentioning

confidence: 99%

A New Parallel Framework of SPH-SWE for Dam Break Simulation Based on OpenMP

Tian

Rubinato

et al. 2020

Water

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Due to its Lagrangian nature, Smoothed Particle Hydrodynamics (SPH) has been used to solve a variety of fluid-dynamic processes with highly nonlinear deformation such as debris flows, wave breaking and impact, multi-phase mixing processes, jet impact, flooding and tsunami inundation, and fluid–structure interactions. In this study, the SPH method is applied to solve the two-dimensional Shallow Water Equations (SWEs), and the solution proposed was validated against two open-source case studies of a 2-D dry-bed dam break with particle splitting and a 2-D dam break with a rectangular obstacle downstream. In addition to the improvement and optimization of the existing algorithm, the CPU-OpenMP parallel computing was also implemented, and it was proven that the CPU-OpenMP parallel computing enhanced the performance for solving the SPH-SWE model, after testing it against three large sets of particles involved in the computational process. The free surface and velocities of the experimental flows were simulated accurately by the numerical model proposed, showing the ability of the SPH model to predict the behavior of debris flows induced by dam-breaks. This validation of the model is crucial to confirm its use in predicting landslides’ behavior in field case studies so that it will be possible to reduce the damage that they cause. All the changes made in the SPH-SWEs method are made open-source in this paper so that more researchers can benefit from the results of this research and understand the characteristics and advantages of the solution proposed.

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Section: Introductionmentioning

confidence: 99%

A New Parallel Framework of SPH-SWE for Dam Break Simulation Based on OpenMP

Tian

Rubinato

et al. 2020

Water

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“…Therefore, when frequency lock-in occurs in the SFT under the flow action, the fatigue damage of the structure will be significantly increased, which will have a negative impact on the safety of the project. Many experimental researches and numerical simulations on the VIV problem were carried out, such as Morse and Williamson [6], Govardhan and Williamson [7], Yan et al [8], Luo et al [9], Zheng et al [10]. VIV experiment of rigid cylinder with elastically support under wind load was successfully studied by Feng [11].…”

Section: Numerical Modelmentioning

confidence: 99%

Numerical Investigation of Vortex Induced Vibration for Submerged Floating Tunnel under Different Reynolds Numbers

Jin

Liu

Geng

et al. 2020

Water

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A 2D numerical model was established to investigate vortex induced vibration (VIV) for submerged floating tunnel (SFT) by solving incompressible viscous Reynolds average Navier-Stokes equations in the frame of Abitrary Lagrangian Eulerian (ALE). The numerical model was closed by solving SST k-ω turbulence model. The present numerical model was firstly validated by comparing with published experimental data, and the comparison shows that good achievement is obtained. Then, the numerical model is used to investigate VIV for SFT under current. In the simulation, the SFT was allowed to oscillate in cross flow direction only under the constraint of spring and damping. The force coefficients and motion of SFT were obtained under different reduced velocity. Further research showed that Reynolds number has not only a great influence on the vibration amplitude and ‘lock-in’ region, but also on the force coefficients on of the SFT. A large Reynolds number results in a relatively small ‘lock-in’ region and force coefficient.

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“…Thus, it has been attracting much research interest from the coastal and ocean engineering community. Typical applications are the wave/currentstructure interaction [40][41][42], wave deformation over topography [43][44][45], liquid sloshing [46][47][48], renewable energy utilization [49][50][51] and sediment dynamics [52][53][54], and the reader is referred to the review papers [55][56][57] to see more examples. Herein, the SPH method is applied to investigate the pontoon-airbag double-row floating breakwater due to the feature of the physical problem.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study on the Hydrodynamic Characteristics of a Double-Row Floating Breakwater Composed of a Pontoon and an Airbag

Cheng

Liu

Zhang

et al. 2021

JMSE

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By adding a cylindrical airbag on the leeward side of a cuboid pontoon, a new-type double-row floating breakwater is designed to improve the wave attenuation performance, and its hydrodynamic characteristics are studied through numerical simulations. First, based on the smoothed particle hydrodynamics (SPH) method, a numerical model used to simulate the interaction between waves and moored floating bodies is built. The fluid motion is governed by the Navier–Stokes equations. The motion of the floating body is computed according to Newton’s second law. The modified dynamic boundary condition is employed to treat the solid boundary. The lumped-mass method is adopted to implement the mooring system. Then, two physical model experiments on waves interaction with cuboid and dual cylindrical floating pontoons are reproduced. By comparing the experimental and numerical wave transmission coefficients, wave reflection coefficients, response amplitude operators and mooring force, the reliability of the numerical model is validated. Finally, the validated numerical model is applied to study the influence of separation distance and wave parameters on the hydrodynamic characteristics of the double-row floating breakwater. The results indicate that the optimal separation distance between pontoon and airbag is 0.75 times the wavelength. At such separation distance and within the concerned 1–4 m wave heights and 4–7 s wave periods, the pontoon-airbag system presents better wave attenuation performance than a single pontoon. This improvement weakens as wave height increases while it strengthens as the wave period increases. In addition, the double-row floating breakwater is more effective in a high-wave regime than in a low-wave regime. In the case of short waves, attention should be paid to the stability and mooring reliability of the seaward pontoon, while in the case of long waves, care needs to be taken of the leeward airbag.

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

Cited by 36 publications

References 42 publications

A New Parallel Framework of SPH-SWE for Dam Break Simulation Based on OpenMP

A New Parallel Framework of SPH-SWE for Dam Break Simulation Based on OpenMP

Numerical Investigation of Vortex Induced Vibration for Submerged Floating Tunnel under Different Reynolds Numbers

Numerical Study on the Hydrodynamic Characteristics of a Double-Row Floating Breakwater Composed of a Pontoon and an Airbag

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