基于GPU的二维流体实时模拟  

Real-time 2D Fluid Simulation on GPU

作　　者：金季强[1] 刘丽[1] 

机构地区：[1]北京航空航天大学自动化科学与电气工程学院,北京100083

出　　处：《系统仿真学报》2011年第8期1657-1659,共3页Journal of System Simulation

摘　　要：利用可编程图形硬件的高级语言Cg在GPU上实现了二维流体的实时模拟,充分发挥GPU的并行计算能力加速了模型的解算。采用半拉格朗日方法来求解纳维-斯托克斯方程,保持流体模拟的稳定性;引入了漩涡约束因子弥补模拟中出现的数值耗散;采用纹理来存储计算过程中用到的数据,并将向量数据各个分量存储到纹理单元的4个颜色通道,减少了GPU计算次数;实现结果表明,对二维流体的模拟是高效率的。The real-time 2D fluid simulation on GPU was achieved by using the high-level language for programmable graphics hardware—C for Graphics.The semi-lagrangian method was used in solving Navier-Stokes equation to obtain the stability of fluid simulation.Vortcity confinement was imported to make up the numerical dissipation in the simulation of fluid.Texture was used to store the data used in the computation and vector quantity was stored to the four channel of a texture unit which decreased the amount of computation.The test results demonstrate that thefluid simulation of this paper is of great efficiency.

关 键 词：GPU 纳维-斯托克斯方程 CG 流体仿真 实时 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]