Numerical Modelling of Wave Attenuation in Pile Breakwater

Abstract Pile breakwater is an artificial coastal structure consisting of closely spaced piles. Its benefits are similar to other structures by attenuating the energy incoming wave. In this paper, wave attenuation caused pile investigated using a numerical model, namely SWASH model. The model allows for simulating non-hydrostatic phenomena in waters as driven waves. setup conducted rectangular flume with paddles produce monochromatic waves on left and absorber side. Several scenarios were carried out determine effect variations parameters. To deal efficiency numerically modelled breakwater, we also investigate transmission coefficient. We compare result experimental data, which took place at Balai Penelitian dan Pengembangan Pantai, Buleleng, Bali, Indonesia. validation results demonstrate capability Model approximate incident transmitted height good accuracy compared data.