Ocean Systems Engineering

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A comparison of smoothed particle hydrodynamics simulation with exact results from a nonlinear water wave model

  • Nguyen, Hoa X. (School of Engineering, Trinity College Dublin) ;
  • Dinh, Van Nguyen (MaREI Centre for Energy, Climate and Marine, University College Cork) ;
  • Basu, Biswajit (School of Engineering, Trinity College Dublin)
  • Received : 2019.08.28
  • Accepted : 2021.04.05
  • Published : 2021.06.25
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Abstract

The aim of this paper is to verify the velocity profile and the pressure variation inside the fluid domain over one wavelength obtained from a numerically simulated Smoothed Particle Hydrodynamics model with some exact qualitative results (i.e., increasing/decreasing trend or constant value of a flow field) from a fully nonlinear Euler equation for water wave model. A numerical wave flume has been modeled and a regular wave train is created by the horizontal displacement of a wave paddle on one side of the flume. A passive beach is used to dissipate the energy of the wave on the other side. The extracted numerical results are compared with some recently available exact results from a nonlinear steady water wave model based on the Euler equations for irrotational flow. The flow properties under wave crests, wave troughs, and along the distance from the wave crest to the wave trough over one wavelength are investigated. The horizontal and vertical velocity components and the pressure in the fluid domain agree well with the analytical results.

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References

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