非均匀粒子流体模拟  

Fluid simulation of non-uniform particle

作　　者：谭诗瀚[1,2] 段茗[1,2] 杨红雨[1,2] 

机构地区：[1]四川大学计算机学院,四川成都610065 [2]四川大学视觉合成图形图像技术国防重点学科实验室,四川成都610065

出　　处：《计算机工程与设计》2011年第8期2760-2763,共4页Computer Engineering and Design

基　　金：国家863高技术研究发展计划基金项目(2009AA01Z332);国家自然科学基金项目(60903118;60832011)

摘　　要：基于物理模型的流体模拟能精确描述流体的运动,但计算量大、实时性较差。根据流体的物理模型,提出了一种基于光滑粒子动力学(SPH)的非均匀粒子模拟流体的方法。提出了一种多因素决定粒子精细度的方法,显著减少了实际模拟需要的流体粒子数目,提高了模拟的速度而又不降低模拟真实感。流体的表面重构采用了一种新的基于屏幕空间的高真实感、高速的重构算法。实验结果表明,与传统的SPH方法相比,该方法在模拟同样场景情况下能大幅降低需要的粒子数目,提升了算法的效率。Simulating large-scale fluid based on physical model in real-time is a big challenge. To solve this problem, a integrated algorithm based on SPH for fluid simulation is presented. In order to both reduce the number of particles in need of simulation and enhance simulation speed, the function of fineness is used to make decision in non-uniform particle sampling process. Also a fast and realistic algorithm is adopted, which construct surface in screen space. The experimental results prove that the method can both reduce the number of particles in the same scene and enhance the simulation speed.

关 键 词：流体模拟 光滑粒子动力学 自适应采样 非均匀粒子 精细度 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]