Incompressible SPH flow model for wave interactions with porous media

Particle methods in ocean and coastal engineering

An integrated model for the wave-induced seabed response around marine structures: Model verifications and applications

Development of a projection-based SPH method for numerical wave flume with porous media of variable porosity

Solitary wave interaction with porous breakwaters is studied by using a two-dimensional numerical model. In this model, flows outside of porous media are described by Reynolds-averaged Navier-Stokes equations. For porous flows, the spatially averaged Navier-Stokes equations, in which the effect of porous media is considered by including additional inertia and drag forces, are derived and implemented. The drag force is modeled according to Morison’s equation assuming uniform spherical particles within porous media. The corresponding drag force coefficient is expressed as the function of Reynolds number and hence the proposed porous flow model is valid in a wide range of porous flow regimes, i.e., laminar (linear friction), transitional, and turbulent (nonlinear friction) flows. The numerical model is validated against available theories and experimental data for both long wave and solitary wave interaction with porous breakwaters. The model is then employed to study solitary wave interaction with fully eme...

Numerical study of solitary wave interaction with porous breakwaters

Structural permeability effects on the interaction of a solitary wave and a submerged breakwater

Propagation of a solitary wave over rigid porous beds

Propagation of water waves over permeable rippled beds

A numerical scheme has been developed to simulate the propagation of water waves over a rigid porous bed. The governing equations for the fluid in the water region are the Navier-Stokes equations. In the governing equations for the motion of a viscous fluid in the porous bed, both the inertial and viscous forces are taken into account. The boundary conditions on the free surface and at the interface of the water and the porous bed are exact. The incoming waves were generated by a piston type wavemaker set up in the computational domain. The numerical results were verified by comparison with the experimental data. The main characteristics of the flow fields in both the water region and the porous bed are discussed by specifying the velocity fields. The effects of a dimensionless parameter, which represents the ratio of the interfacial force to the inertial force acting on the porous fluid, on the wave height attenuation were studied and discussed.

Hsing Han Chang

Papers

Structural permeability effects on the interaction of a solitary wave and a submerged breakwater

Propagation of a solitary wave over rigid porous beds

Propagation of water waves over permeable rippled beds

Wave-induced response in a rigid porous bed