Realistic wave generation and active wave absorption for Navier–Stokes models: Application to OpenFOAM®

Simulating coastal engineering processes with OpenFOAM

Numerical analysis of wave overtopping of rubble mound breakwaters

RANS modelling applied to random wave interaction with submerged permeable structures

EurOtop: Manual on wave overtopping of sea defences and related sturctures : an overtopping manual largely based on European research, but for worlwide application

Wave overtopping over a sea dike

Interactions of breaking waves with a current over cut cells

This paper represents a solver for numerical simulation of breaking waves, developed at Ghent University using an implicit cellstaggered VOF finite volume approach. The mathematical model is based on unsteady incompressible Navier-Stokes (NS) equations with a free surface. A flux-difference splitting approach with the MUSCL type (or the ENO scheme) and a central-difference scheme are applied for evaluation of the inviscid and viscous fluxes, respectively. A projection method is involved for coupling of the pressure and the velocity. A free surface is tracked with the VOF method, in which the approximate dynamic boundary conditions are implemented. In addition, second- and fourth-order artificial damping terms are introduced to the velocity normal to the cell face. A Sommerfeld radiation condition is implemented at the open boundary to dissipate the energy of outgoing waves. Moreover, cut-cell techniques are utilized for treatment of an arbitary geometry. The solver can capture many physical phenomena during the interaction of waves with a dike, when a wave run-up and overtopping over an impermeable sea dike are performed in a numerical wave tank.

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Wave Interaction With a Sea Dike Using a VOF Finite-Volume Method

Numerical simulation of motions of moving bodies in waves

The calculated results for the violent impact of water waves onto rigid stationary coastal structures are presented in this paper. The simulation is performed in a numerical wave flume using our recently developed in-house Navier-Stokes solver([4]) named LVOF. It is a VOF finite volume approach that incorporates the surface tension effects, coupled with a dynamic subgrid-scale (SGS) turbulence model. Test cases concern a combination of wave propagation, shoaling, reflection, diffraction, breaking and overtopping after impact. Additionally, the effects of a current on wave-structure interactions are investigated, including the study of the influence of viscosity on the wave boundary layer under breakwater and the 3D effects. Our results demonstrate that our solver can describe most of the significant features of motions induced by regular and irregular waves. In particular, the shape of the free surface agrees well with measurements under grid refinementscaptured and even during lengthy computations.

Tingqiu Li

Papers

Wave overtopping over a sea dike

Interactions of breaking waves with a current over cut cells

Wave Interaction With a Sea Dike Using a VOF Finite-Volume Method

Numerical simulation of motions of moving bodies in waves

Numerical simulation of water wave impacts using a navier-stokes solver