CHARACTERISTICS OF SHORT-CRESTED WAVES AND CURRENTS BEHIND OFFSHORE MAN-MADE ISLAND TYPE POWER PLANT

This paper describes the diffracted waves with breaking and the nearshore currents caused by short-crested waves, behind a man- made island, on which nuclear power plants are constructed. Firstly, hydraulic model tests with a multi-directional wave maker were performed. Effects of the irregularity and directional spreading of waves, and the effects of cooling water intake flow on diffracted waves and nearshore currents behind a man-made island, were investigated experimentally. Secondly, a numerical model was developed to simulate deformation of multi-directional irregular waves and nearshore currents. The validity of the numerical model was verified through comparisons with the experimental results.