Improved SPH simulation of wave motions and turbulent flows through porous media

Bing Ren (Lead / Corresponding author), Hongjie Wen, Ping Dong, Yongxue Wang

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

An improved weakly compressible smoothed particle hydrodynamic (WCSPH) model is developed to model wave motions and turbulent flows through porous structures. The model is based on the Volume Averaged and Favre Averaged Navier-Stokes (VAFANS) equations in which the sub-particle-scale (SPS) turbulence stresses are calculated using an eddy viscosity type model. The resistant forces on the fluid flow caused by the presence of the solid skeleton are expressed in the standard empirical linear and nonlinear forms. By introducing porosity information at fixed background points, the interfaces between different media are treated using the SPH interpolation method. The SPH porous model is validated by available numerical results and experimental data for dam-break wave passing through permeable dam. The validated model is applied to study wave interaction with submerged and emerged rubble-mound breakwaters of two layer porous media and good agreements between the computed results and the experimental data are obtained, demonstrating the predicative capability of the model in simulating general turbulent flows through porous media.

Original languageEnglish
Pages (from-to)14-27
Number of pages14
JournalCoastal Engineering
Volume107
Early online date31 Oct 2015
DOIs
Publication statusPublished - 1 Jan 2016

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Turbulent flow
Porous materials
Dams
Breakwaters
Navier Stokes equations
Flow of fluids
Interpolation
Turbulence
Hydrodynamics
Porosity
Viscosity

Keywords

  • Breaking wave
  • Porous structure
  • SPH porous model
  • SPS turbulence model

Cite this

Ren, Bing ; Wen, Hongjie ; Dong, Ping ; Wang, Yongxue. / Improved SPH simulation of wave motions and turbulent flows through porous media. In: Coastal Engineering. 2016 ; Vol. 107. pp. 14-27.
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Improved SPH simulation of wave motions and turbulent flows through porous media. / Ren, Bing (Lead / Corresponding author); Wen, Hongjie; Dong, Ping; Wang, Yongxue.

In: Coastal Engineering, Vol. 107, 01.01.2016, p. 14-27.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Improved SPH simulation of wave motions and turbulent flows through porous media

AU - Ren, Bing

AU - Wen, Hongjie

AU - Dong, Ping

AU - Wang, Yongxue

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PY - 2016/1/1

Y1 - 2016/1/1

N2 - An improved weakly compressible smoothed particle hydrodynamic (WCSPH) model is developed to model wave motions and turbulent flows through porous structures. The model is based on the Volume Averaged and Favre Averaged Navier-Stokes (VAFANS) equations in which the sub-particle-scale (SPS) turbulence stresses are calculated using an eddy viscosity type model. The resistant forces on the fluid flow caused by the presence of the solid skeleton are expressed in the standard empirical linear and nonlinear forms. By introducing porosity information at fixed background points, the interfaces between different media are treated using the SPH interpolation method. The SPH porous model is validated by available numerical results and experimental data for dam-break wave passing through permeable dam. The validated model is applied to study wave interaction with submerged and emerged rubble-mound breakwaters of two layer porous media and good agreements between the computed results and the experimental data are obtained, demonstrating the predicative capability of the model in simulating general turbulent flows through porous media.

AB - An improved weakly compressible smoothed particle hydrodynamic (WCSPH) model is developed to model wave motions and turbulent flows through porous structures. The model is based on the Volume Averaged and Favre Averaged Navier-Stokes (VAFANS) equations in which the sub-particle-scale (SPS) turbulence stresses are calculated using an eddy viscosity type model. The resistant forces on the fluid flow caused by the presence of the solid skeleton are expressed in the standard empirical linear and nonlinear forms. By introducing porosity information at fixed background points, the interfaces between different media are treated using the SPH interpolation method. The SPH porous model is validated by available numerical results and experimental data for dam-break wave passing through permeable dam. The validated model is applied to study wave interaction with submerged and emerged rubble-mound breakwaters of two layer porous media and good agreements between the computed results and the experimental data are obtained, demonstrating the predicative capability of the model in simulating general turbulent flows through porous media.

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KW - SPS turbulence model

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