Water Action Simulation Based On Particle And Wave

Fluid simulation is an important research area of computer graphics, and it is still a challenge to render fluid in real time, therefore receiving strong interest of many researchers. Water simulation is a hot direction of fluid simulation.To simulate different water status needs to use different simulation principles due to the diversity of water actions. The previous research mainly focused on water wave and sea wave simulation, which is roughly classified into two basic approaches: Euclidean mesh and Lagrangian particle. The former is a discrete method:subdivide the space into several cells and control fluid fragment within each cell. This approach can simulate several kinds of fluid including viscous fluid in real time, and realize incompressible condition. However, it fails in characterizing detail features because moving wave of fluid is constrained by mesh resolution. While the later simulates fluid using particle and wave. This method provides diverse modeling frame, thus widely be used. Lagrangian particle is difficult to simulate smooth surface.This paper studies fountain simulation, and attempt to build a general platform for simulating fountain. Fountain simulation is divided into two phases:splashing drops simulation and the interactive effect between drops and water surface. We simulate splashing drops using particles and free-fall principle. The phase two adopts wave particle method to mimic water wave and the interactive effect. In order to avoid solving complicated wave equations, this paper employs circular diffusion of 1D wave to approximate water wave. Based on the above principles, we implement a basic simulation platform using VC++and 3D graphic engine OGRE. Our fountain simulation takes full advantage of particle and wave, and is able to render visually real fountain.