Numerical Wave Flume with Improved Smoothed Particle Hydrodynamics

The numerical wave flume was established for simulating the impact effects of regular waves on horizontal plate by adopting the method of Smoothed Particle Hydrodynamics (SPH).The impact process of regular waves on horizontal plate was analyzed, and the impact pressure-time curves were gotten using a new estimation method. The comparison of numerical results and experimental results shows that the new estimation method can predict the peak impact pressure more accurately.

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3D Numerical Wave Basin Based on Parallelized SPH Method

Volume 8A: Ocean Engineering ◽

10.1115/omae2014-23596 ◽

2014 ◽

Cited By ~ 1

Author(s):

Hongjie Wen ◽

Bing Ren

Keyword(s):

Solitary Wave ◽

Smoothed Particle Hydrodynamics ◽

Large Diameter ◽

Regular Wave ◽

Sph Method ◽

Submerged Breakwater ◽

Wave Basin ◽

Particle Hydrodynamics ◽

Smoothed Particle ◽

Numerical Wave

A viscous 3D numerical wave basin for high nonlinear waves was developed based on Smoothed Particle Hydrodynamics (SPH) method. The computational accuracy of SPH method is mainly improved by introducing the Corrective Smoothed Particle Hydrodynamics Method (CSPM) and a novel pressure correction scheme. The incident waves are generated from the inflow boundary by prescribing a velocity profile of the flap-type wavemaker motions, and the outgoing waves are numerically dissipated inside an artificial damping zone located at the end of the basin. Moreover, the parallelization of the improved 3D SPH scheme has been carried out using a hybrid MPI-OpenMP programming, together with a dynamic load balancing strategy to improve the computational efficiency. The generation and propagation of regular wave and solitary wave have been simulated. Wave forces induced by regular wave acting on a large-diameter circular cylinder and solitary wave passing over a submerged breakwater are also presented to verify the accuracy of SPH model. In addition, several computing cases of different particle resolutions are investigated and a high parallel efficiency is obtained.

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Numerical Wave Flumes Based on Smoothed Particle Hydrodynamics

Hydrodynamics - Theory and Model ◽

10.5772/38174 ◽

2012 ◽

Author(s):

Jinhai Zheng ◽

Gang Wang ◽

Chi Zhang ◽

Yingqi Liu

Keyword(s):

Smoothed Particle Hydrodynamics ◽

Particle Hydrodynamics ◽

Smoothed Particle ◽

Numerical Wave

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Numerical wave basin using incompressible smoothed particle hydrodynamics (ISPH) on a single GPU with vertical cylinder test cases

Computers & Fluids ◽

10.1016/j.compfluid.2018.11.022 ◽

2019 ◽

Vol 179 ◽

pp. 543-562 ◽

Cited By ~ 9

Author(s):

Alex D. Chow ◽

Benedict D. Rogers ◽

Steven J. Lind ◽

Peter K. Stansby

Keyword(s):

Smoothed Particle Hydrodynamics ◽

Vertical Cylinder ◽

Test Cases ◽

Cylinder Test ◽

Wave Basin ◽

Particle Hydrodynamics ◽

Smoothed Particle ◽

Incompressible Smoothed Particle Hydrodynamics ◽

Numerical Wave

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NUMERICAL STUDY ON MOVEMENT OF TSUNAMI BOULDER AND STORM BOULDER BY SPH METHOD

Coastal Engineering Proceedings ◽

10.9753/icce.v36v.currents.15 ◽

2020 ◽

pp. 15

Author(s):

Takashi Yamamoto ◽

Tomohiro Yasuda

Keyword(s):

Numerical Study ◽

Irregular Waves ◽

Sph Method ◽

Numerical Wave Flume ◽

Wave Flume ◽

Particle Hydrodynamics ◽

Movement Mechanism ◽

Smoothed Particle ◽

The Difference ◽

Caisson Breakwater

Smoothed Particle Hydrodynamics (SPH) is known as very useful method for large deformation problems, such as movement of wave absorbing blocks and sliding of caisson breakwater. Also, in the coastal area, boulders launched by tsunami and by high waves with typhoons (named tsunami boulders and storm boulders) are focused on because of risk assessment towards the tsunami or super typhoons. However, the difference of their movement mechanism have been rarely investigated in detail. This study aims to simulate the movement of the tsunami boulders and storm boulders, comparing with the hydraulic experiment, and evaluating the transport characteristics. Wave elevation and boulder displacement were reproduced in the numerical wave flume well compared to physical model. Also, there is difference between solitary and irregular waves when waves act on boulders.Recorded Presentation from the vICCE (YouTube Link): https://youtu.be/WOfXbU7m_8E

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Wave Propagation Studies in Numerical Wave Tanks with Weakly Compressible Smoothed Particle Hydrodynamics

Journal of Marine Science and Engineering ◽

10.3390/jmse9020233 ◽

2021 ◽

Vol 9 (2) ◽

pp. 233

Author(s):

Samarpan Chakraborty ◽

Balakumar Balachandran

Keyword(s):

Smoothed Particle Hydrodynamics ◽

Kernel Functions ◽

Numerical Dissipation ◽

Processing Unit ◽

Numerical Wave Tank ◽

Wave Tank ◽

Weakly Compressible ◽

Particle Hydrodynamics ◽

Smoothed Particle ◽

Numerical Wave

Generation and propagation of waves in a numerical wave tank constructed using Weakly Compressible Smoothed Particle Hydrodynamics (WCSPH) are considered here. Numerical wave tank simulations have been carried out with implementations of different Wendland kernels in conjunction with different numerical dissipation schemes. The simulations were accelerated by using General Process Graphics Processing Unit (GPGPU) computing to utilize the massively parallel nature of the simulations and thus improve process efficiency. Numerical experiments with short domains have been carried out to validate the dissipation schemes used. The wave tank experiments consist of piston-type wavemakers and appropriate passive absorption arrangements to facilitate comparisons with theoretical predictions. The comparative performance of the different numerical wave tank experiments was carried out on the basis of the hydrostatic pressure and wave surface elevations. The effect of numerical dissipation with the different kernel functions was also studied on the basis of energy analysis. Finally, the observations and results were used to arrive at the best possible numerical set up for simulation of waves at medium and long distances of propagation, which can play a significant role in the study of extreme waves and energy localizations observed in oceans through such numerical wave tank simulations.

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