A Study on the Cross Section Shapes of Floating Breakwater for the Improvement of Wave Attenuation Performance

초록

In this study, as fundamental study for shape design of floating breakwater, Numeri-cal simulation on a change of wave attenuation performance according to using basic simple cross sectional shapes combined or deformed shapes were performed and examined. As a numerical simulation method, a computation method based on the MMD(modified marker-density method) and a commercial program STAR-CCM+ were used. The Transmission coefficients of the floating breakwaters according to the changes in cross-sectional shape were simulated and compared. To verify the accuracy of numerical methods in this study, the numerical simulation results are compared with those in the previous studies. In order to improve the wave attenua-tion performance by overcoming the problems which the transitional Floating breakwater with rectangular cross section causes, numerical simulations have been carried out on the Floating breakwaters which have various cross section shapes. This study performed the reverse trapezoidal shape and the hat shape with reference to the previous study. The new cross sectional shape that has better wave attenua-tion performance than the rectangular cross sectional shape in both short and long period waves.