Based On Physical Realistic Fluid Simulation Study

Computer Graphics is the core of the Virtual Reality and Digital Media. Realistic modeling of natural phenomena has been a hotspot and one of the most difficult tasks in Compute Graphics. It has been found wide application in many domains such as computer animation, landscaping, architecture, special effects of movie, computer games, battlefield simulation and virtual reality, etc. Physically based modeling must be applied to attain more realistic results on both shapes and movements, on the other hand, the simplification and acceleration techniques also should be introduced to render the dynamic and whole effects of natural phenomena more quickly. So the physically based modeling aims to seek for a tradeoff between the realistic effects and real time performance, to meet the needs from various applications.Physically based computer animation is always a hot topic in computer graphics especially in the special effects industry for films and games. Only physics makes the virtual scene more realistic, and takes the easy way out of the complex problems for simulation which gives the developers and artists more and more dream space.This thesis focuses on the study in three aspects, including research and analysis of physically based fluid simulation algorithms, so as to make sure the key problems in realistic fluid animation; design the advanced methods for fluid simulation, which aim at the immediate problems; implement the meshless fluid simulation algorithms, alsocompare the results for conclusion and future works.The main contributions of this thesis are mainly in the following aspects:①To make sure stability and nicety in fluid simulation, we attempt on adaptively sampled multi-resolution particle fluid model based on physics and geometry sampling factors, with realistic fluid-solid two way synchronous coupling algorithms in the simulation;②Use phase transition model with fluid and solid co-exit, with the adaptive surface re-construction method for fluid particles, we can simulation three phases transition realistically;③Consider the microcosmic physics model for the attachment and penetration of small liquids, we attempt on multi-resolution physics model for large and small scales liquid simulation, with a middle transitional model, so as to build a integrated liquid animation method.