Innovative numerical model to study wave-breakwater interaction

摘要

The MEDUS developed an innovative procedure that, by using cad and numerical software, gives the possibility to study with a more detailed approach the hydrodynamic of the wave motion (overtopping, breaking, run-up, reflection, transmission) over a rubble mound structure (emerged or submerged) as well as the hydraulic stability of the armour stones. The simulations are carried out so that the filtration of the fluid within the interstices of a concrete blocks breakwater, is evaluated by integrating the Reynolds Averaged Navier-Stokes equations (RANS) inside the voids rather than making use of the widespread "porous media" approach. The breakwater is thus modeled, very much like in the real world or in the physical laboratory testing, by overlapping individual three-dimensional elements and then the computational grid is fitted so as to provide enough computational nodes within the flow paths.