EXPERIMENTAL STUDY FOR INVESTIGATION OF WAVE AND CURRENT FIELD AROUND A SLIT-TYPE PERMEABLE BREAKWATER

Abstract

 The 2D and 3D model experiments of which scale is 1/16 are conducted to investigate the wave and current field around a slit-type permeable breakwater. The results of 3D model experiment are supported by the results of 2D model experiment. And, the changes of wave transmission and reflection ratios on the permeable breakwater due to tidal currents can be explained by considering the interaction of wave and current field, which is reproduced by a serpent-type wave maker and a horizontal current generator. Moreover, while the existence of slit does not amplify the wave pressure acting to both side caissons at least, Goda’s formulae can also estimate a design wave pressure of such a permeable breakwater in safe.