Visual Simulation of Multiple Unmixable Fluids

We present a novel grid-based method for simulating multiple unmixablefluids moving and interacting. Unlike previous methods that can onlyrepresent the interface between two fluids (usually between liquid andgas), this method can handle an arbitrary number of fluids throughmultiple independent level sets coupled with a constrain condition. Tocapture the fluid surface more accurately, we extend the particle levelset method to a multi-fluid version. It shares the advantages of theparticle level set method, and has the ability to track the interfacesof multiple fluids. To handle the dynamic behavior of different fluidsexisting together, we use a multiphase fluid formulation based on asmooth weight function.