Author(s): Paran Pourteymouri, Kourosh Hejazi

Linked Author(s): Paran Pourteymouri

Keywords: Wave-porous structure interaction, submerged breakwater, extended navier-stokes equations, two-dimensional vertical (2DV), finite volume method (FVM)

Abstract: This paper presents a non-hydrostatic two-dimensional vertical (2DV) numerical model for the simulation of wave-porous structure problems. The flow in both porous and pure fluid regions is described by the extended Navier-Stokes equations, in which the resistance to flow through a porous medium is considered by including the additional terms of drag and inertia forces. A fractional two-step projection method has been deployed to solve the governing equations in an arbitrary Lagrangian-Eulerian (ALE) description. The finite volume method (FVM) is employed to discretize the flow and transport equations, providing flexibility for defining control volumes in a staggered computational grid. The newly developed model is verified by comparing the numerical simulations with the analytical solutions of a small amplitude Stokes progressive wave and solitary wave propagation in a constant water depth shows excellent agreements for the pure fluid region. The numerical model is then employed to simulate the regular wave evolutions over a permeable rectangular submerged breakwater. The comparison of the results with the measured values reported in the literature shows good agreements of the integrated model predictions and the experimental values for free surface water displacements

DOI:

Year: 2017