基于物理的烟雾动画  

Physics-Based Animation of Smoke

作　　者：周永霞[1] 石教英[1] 郁佳荣[1] 

机构地区：[1]浙江大学CAD&CG国家重点实验室,杭州310058

出　　处：《计算机辅助设计与图形学学报》2006年第9期1367-1371,共5页Journal of Computer-Aided Design & Computer Graphics

基　　金：国家重点基础研究发展规划项目(2002CB312100)

摘　　要：基于物理的烟雾模拟中,需要求解Navier-Stokes偏微分方程组.通过量纲分析,简化了该方程.在求解对流项时采用半拉格朗日方法,为弥补该方法带来的数值耗散,引入了高阶精度紧致格式,在较粗的网格上亦可得到较高精度的导数值.实验结果表明:该算法效果比较真实,速度较快.In the physics-based simulation of smoke, a set of Navier-Stokes partial differential equations need to be solved. In solving the problem, we use the Dimension Analysis method to simplify the equations. While solving the advection item, the semi-Lagrangian scheme is adopted. For the numerical dissipation inherent in the semi-Lagrangian scheme, a compact scheme highly accurate was introduced to improve the accuracy on coarse grids. It is shown that these methods can efficiently produce realistic results.

关 键 词：计算机动画 基于物理 紧致格式 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]