COMPARISON BETWEEN A PERCHED BEACH AND AN ARTIFICIAL REEF IN TERMS OF WAVE ATTENUATION

In the present work, numerical models of a perched beach (PB) and an artificial reef (AR) are used in order to assess their effectiveness as environment-friendly coastal protection methods. The comparison is based on the results of wave attenuation and velocity field. The methodology is based on large-eddy simulations of the developing two-phase (water/air) flow induced by wave propagation. The results of the free-surface elevation indicate that the PB reduces slightly the wave height, whereas the reef diminishes it almost completely.