SPH真实感流体交互模拟的改进算法

Improved Algorithm for Realistic Fluid Interactive Simulation Based on Smoothed Particle Hydrodynamics

针对目前流体仿真中存在的模拟效率低及模拟交互的真实感不足等问题,提出一种基于光滑粒子流体动力学的流体模拟改进算法。首先,采用光滑粒子流体动力学方法进行粒子系统建模,通过矫正压力及速度场保证流体求解方程的精确性和稳定性;然后通过简化流体计算模型,完成流体表面建模,提高流体表面渲染速度;最后使用硬件加速算法实现流体模拟的快速渲染,提高流体的真实感和交互的实时性。实验结果表明,该算法能够明显提升流体渲染的真实感,减小计算复杂性。大规模粒子实时模拟帧率达到20帧/s,实现了较为真实的交互应用。

To solve the low efficiency and reality in the real fluid simulation,this paper presents an improved smoothed particle hydrodynamics movement simulation algorithm. Firstly,the particle system was modeled by smoothed particle hydrodynamics method. The accuracy and stability of the fluid solution equation was improved by correcting the pressure and velocity fields. Secondly,the water surface was modeled and the rendering speed of the fluid surface was optimized by simplifying the fluid particles calculation. Finally,the hardware acceleration algorithm was used to achieve faster fluid rendering. The experimental results show that the algorithm can significantly enhance the reality of fluid rendering and reduce the computational complexity. In large-scale particle real-time simulation,the frame rate reaches 20 frames per second,which realizes a real interactive application.