pressure corrected sph for fluid animation

	pressure corrected sph for fluid animation
	Bao Kai; Zhang Hui; Zheng Lili; Wu Enhua
	2009
关键词	Smoothed Particle Hydrodynamics Pressure Correction Fluid Animation Equation Of State
摘要	We present a novel pressure correction scheme for the Smoothed Particle Hydrodynamics (SPH) for fluid animation. In the conventional SPH method, equations of state (EOS) are employed to relate the pressure to the particle density. To enforce the volume conservation, high speeds of sound are usually required, which leads to very small time steps and noisy pressure distribution. The problem remains one of the main reasons of numerical instability in SPH. In the paper, a new extra pressure correction scheme is proposed to transport the local pressure disturbance to the neighboring area and no solution of the Poisson equation is required. As a result, smoother pressure distribution and more efficient simulation are achieved. The proposed method has been used to simulate free surface problems. The results demonstrate the validation of the present SPH method. Surface tension and fluid fragmentation can be Well handled. Copyright (C) 2009 John Wiley & Sons, Ltd.
部门归属	Bao, Kai Chinese Acad Sci, Inst Software, State Key Lab Comp Sci, Beijing 100190, Peoples R China. Zhang, Hui Tsinghua Univ, Ctr Publ Safety Res, Beijing, Peoples R China. Zheng, Lili Tsinghua Univ, Sch Aerosp, Beijing, Peoples R China. Wu, Enhua Univ Macau, Taipa, Peoples R China.
组织者	Comp Graph Soc
页数	311-320
语种	英语
引用统计
内容类型	学位论文
URI标识	http://ir.iscas.ac.cn/handle/311060/8186
专题	基础软件与系统重点实验室
推荐引用方式 GB/T 7714	Bao Kai,Zhang Hui,Zheng Lili,et al. pressure corrected sph for fluid animation[D],2009.