Effectiveness of a Pile-Supported Breakwater with an Inclined-Plate-Array and a Submerged Plate in a Harbor

We have proposed a new type breakwater supported by piles, which consists of three major parts, i. e., an inclined plate array as a front wall, a vertical rear wall and a submerged plate at the base. It has been confirmed by the two-dimensional experiment that it enables to reduce both reflected and transmitted waves and also induce the mean current about the breakwater. In this study, we have carried out experiments on the performance of this type of breakwater in the three dimensional fields. For the comparisons, conventional breakwaters, such as a curtain-walled breakwater and also a vertical breakwater, were also used as a breakwater model. For the theoretical prediction of nearshore circulation around the harbor, applicability of the numerical analysis based on the Multi-Layered model was extensively examined.