CFD Simulations of Wave Impact Loads on a Truncated Circular Cylinder by Breaking Waves

In this study, a numerical study was carried out on the wave impact problems between a truncated circular cylinder and breaking waves by using computational fluid dynamics (CFD) simulations. The target problem, which has been experimentally examined in the model test of Ha et al. (2018), is the wave impact problem between the cylinder and three different focusing waves (i.e., steep, spilling, and plunging waves). First, wave generation performance is checked by applying the present CFD simulation. In this case, the measured stroke signals of the wave maker in the test were directly used as input to the velocity boundary condition of the numerical calculation. Then, a series of CFD simulations were performed to estimate the local wave impact forces acting on the cylinder. For the validation, the numerical simulation results were directly compared with the model test data.