Sharp Interface LES of Breaking Waves by an Interface Piercing Body in Orthogonal Curvilinear Coordinates

摘要

A sharp interface LES methodology on orthogonal curvilinear grid for breaking waves produced by an interface-piercing body at high Reynolds number is presented. Both gas and liquid phases are considered for the strong interactions between two phases, such as spray dispersion and bubble entrainment. The level-set based ghost fluid method is adopted for sharp interface treatment and a volume-of-fluid method in orthogonal curvilinear coordinates is coupled with the level set method for enhanced interface tracking. A Lagrangian dynamic Smagorinsky subgrid-scale model is used for the spatially filtered turbulence closure. Several numerical tests are conducted in order to validate the code. Wave breaking around a wedge-shaped bow is simulated with the results compared with the experimental measurement.