Experimental study on hydrodynamic performance of arc plate breakwater

The arc plate breakwater, which consists of several arc plates suspended on supporting piles, is proposed in this paper. The wave damping performance of the breakwater is explored by two dimensional regular wave model tests. The hydrodynamic performance of the breakwater is compared with that of the similar breakwater which consists of several horizontal plates. The relative width, relative submergence, relative height, relative gap and the plate amount of the arc plate breakwater those identified with the hydrodynamic performance are discussed. The variation of reflection, transmission and dissipation coefficients alone with the relative width are also presented. It is demonstrated that the performance of the arc plate breakwater is better than that of the horizontal plate breakwater. The transmission coefficient can be reduced to 0.5 when the relative width is about 0.2. The performance relates to the relative submergence, height and gap. Yet the amount of the arc plate has a little influence on the wave attenuation performance.