Fluid-Fluid Collision for Particle-Based Immiscible Fluid Animation

In this paper, we propose a new fluid-fluid collision model for particle-based immiscible fluid animation. Our model consists of two components, namely, collision detection and collision response. An interesting feature is that our model not only can prevent immiscible fluids from mixing with each other, but also can allow one fluid to run through or to wrap around another fluid. The model is very flexible and can work with many existing particle-based fluid models. The animation results are presented and show that the proposed model can produce many interesting fluid animations.