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题名:
pressure corrected sph for fluid animation
作者: Bao Kai ; Zhang Hui ; Zheng Lili ; Wu Enhua
答辩日期: 2009
关键词: Smoothed Particle Hydrodynamics ; pressure correction ; fluid animation ; equation of state
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
英文摘要: 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.
语种: 英语
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内容类型: 学位论文
URI标识: http://ir.iscas.ac.cn/handle/311060/8186
Appears in Collections:计算机科学国家重点实验室 _学位论文

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Recommended Citation:
Bao Kai,Zhang Hui,Zheng Lili,et al. pressure corrected sph for fluid animation[D]. 2009-01-01.
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