Author(s): Fatemeh Hajivalie
Linked Author(s): Fatemeh Hajivalie
Keywords: Transmission coefficient, trapezoidal breakwater, rectangular submerged breakwater, wave breaking
Abstract: In this paper, the effect of submerged breakwater shape and size has been studied using a two dimensional numerical model based on Navier-Stokes equations. For this purpose, two different shapes of submerged breakwaters have been selected for numerical simulations, rectangular and trapezoidal. For each shape, six different simulations are conducted with six different widths. The results show that increasing the crest width can increase the energy dissipation in rectangular submerge breakwater, however it is ineffective in case of trapezoidal ones. Therefore, in some cases, the trapezoidal submerged breakwaters can unexpectedly dissipate more energy than the rectangular breakwaters. In case of this study with relative submergence depth equal to 0. 2, it occurs when the crest width is less than about half of a wave length
Year: 2017