IMECH-IR  > 水动力学与海洋工程重点实验室(2009-2011)
Alternative TitleParticle Distribution and Numerical Stability in Smoothed Particle Hydrodynamics Method
刘谋斌; 常建忠
Source Publication物理学报
Other Abstract Smoothed particle hydrodynamics(SPH) is a Lagrangian meshfree particle method, and has been widely applied to different areas including incompressible or pseudo-incompressible flows with multiphase interfaces and moving boundaries. In this paper, an instability problem has been identified when the conventional SPH method is applied to modeling the Poiseuille flow problem at long-term simulations. It is found that this instability resulted from the particle inconsistency inherent to the SPH method, which originates from the discrete particle approximation and is a fundamental cause for poor approximation accuracy. A new particle approximation approach has been used to restore the particle consistency. We show that this particle consistency restoring approach can produce stable solutions for both regular and irregular particle distributions even at long-term simulations.
Subject Area流体力学
Indexed BySCI ; CSCD
WOS IDWOS:000278672300006
Funding Organization国家自然科学基金(批准号:10942004,50976108)资助
Citation statistics
Cited Times:21[WOS]   [WOS Record]     [Related Records in WOS]
Cited Times:20[CSCD]   [CSCD Record]
Document Type期刊论文
Corresponding Author刘谋斌
Recommended Citation
GB/T 7714
刘谋斌,常建忠. 光滑粒子动力学方法中粒子分布与数值稳定性分析[J]. 物理学报,2010,59(6):3654-3662.
APA 刘谋斌,&常建忠.(2010).光滑粒子动力学方法中粒子分布与数值稳定性分析.物理学报,59(6),3654-3662.
MLA 刘谋斌,et al."光滑粒子动力学方法中粒子分布与数值稳定性分析".物理学报 59.6(2010):3654-3662.
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File name: 2010_Acta Physica Sinica SPH Instability.pdf
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