Comparison of Particle Level Set and CLSVOF Methods for Interfacial Flows

The level set method is susceptible to the numerical dissipation, which usually results in serious mass loss in the under-resolved regions at the interface. In this study, a hybrid particle level set method and a coupled level set and volume-of-fluid method, have been implemented with the aim at improving the mass conservation property of the level set method. A number of standard tests are conducted to evaluate their performances. The two methods are applied to simulate a water drop impact onto a liquid pool, and wave breakings over a submerged bump which is of particular relevance to ship hydrodynamics.