Abstract
Recently many seawater exchangeable breakwaters have been constructed for improvement of seawater quality in port and inner harbor. A seawater exchangeable breakwater composed of vertical walls and slits is one of geometrically idealized shape of it. However due to the complex flow field including large scale vortex around the walls, the mechanism and flow pattern of seawater exchanging are not clear. In this study, a series of numerical simulations using Reynolds-Averaged Navier-Stokes equation with free surface is performed to simulate flows around the double vertical walls with slits in two-dimensional domain. The prototype design to control the current direction geometrically controlled large-scale vortex is proposed based on the numerical results. The validity of the numerical simulation and effectiveness of current control are verified by comparing with the hydraulic model tests.
