In many ports in Japan, long-period waves cause disturbances of cargo handling and breaks of mooring ropes. We developed a new type of long-period wave absorption structure which involves two oblique walls and a vertical slit between them. The performance of various structural types of them has been examined by two dimensional hydraulic experiments.
In this paper, the performance when installing proposed structure in an actual port is examined. We study the effect of the proposed structure to reduce standing wave height in the harbor by three dimensional model test and numerical experiment using boussinesq equation.
