Numerical study on the effect of perforations on the wave dissipation characteristics of “Horse-hoof-shaped hollow piles breakwaters”

Abstract

This paper investigates the effect of perforations on the wave dissipation characteristics of Horse-hoof-shaped hollow pile breakwaters (HHPBs) using the Flow3D model. The results indicate that, with varying wave parameters and sea water levels, the wave dissipation coefficient (Kl) varies between 0.59 and 0.82, the transmission coefficient (Kt) varies between 0.24 and 0.63, and the reflection coefficient (Kr) ranges from 0.33 to 0.6, as the perforated ratio on the front side changes from 9.6% to 14%, while the perforated ratio on the rear side remains constant at 11.31%. In particular, the maximum wave energy dissipation (67%) occurs when the front-rear side ratio is 12% - 11.31% and the ratio of water depth to wave height (d/H) is 0.8.