Numerical study of the wave dissipation performance of two plate-type open breakwaters based on the Navier-Stokes equations

In this study, wave generation is simulated using the velocity wave generation method. A damping wave dissipation region is established to eliminate wave reflection at the flume tail. Fluid motion is described using the Navier-Stokes equations. The water free surface is captured using the volume of fluid method. A 2D numerical model for the interactions between waves and plate-type open breakwaters is constructed using the finite volume method, and their correctness is validated by experimental results. Based on these models, two plate-type open breakwaters are compared in terms of the wave transmission coefficient (K-t), wave reflection coefficient (K-r), wave energy dissipation coefficient (K-d) and wave energy distribution. By comprehensively considering K-t, K-r, K-d and the wave energy distribution, the double-arc plate-type open breakwater is found to exhibit higher wave dissipation performance.