Smoothed particle hydrodynamics modeling of viscous liquid drop without tensile instability

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	Smoothed particle hydrodynamics modeling of viscous liquid drop without tensile instability
	Yang XF(杨秀峰); Liu MB(刘谋斌); Peng SL(彭世镠); Yang, XF (reprint author), Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China.
发表期刊	COMPUTERS & FLUIDS
	2014-03-20
卷号	92 页码:199-208
ISSN	0045-7930
摘要	Smoothed particle hydrodynamics (SPH), as a Lagrangian meshfree particle method, has been applied to modeling viscous liquid drop with surface tension and wetting dynamics. In the SPH model, the van der Waals (vdW) equation of state is usually used to describe the gas-to-liquid phase transition similar to that of a real fluid. However, the attractive forces between SPH particles originated from the cohesive pressure of the vdW equation of state can lead to tensile instability, which is associated with unphysical phenomena such as particle clustering or blowing away. This paper presents an improved SPH method for modeling viscous liquid drop. The inherent tensile instability in SPH is removed by using a hyperbolicshaped kernel function which possesses non-negative second derivatives. A single-step approximation for heat flux is used in modeling viscous liquid drop with smoother temperature field. The formations of viscous liquid drops, both in 2D and 3D, are tested and it clearly demonstrates that the tensile instability can be effectively removed. The improved SPH method is also used to model two other numerical examples including the oscillation and binary collision of liquid drops without tensile instability. (C) 2014 Elsevier Ltd. All rights reserved.
关键词	Liquid Drop Smoothed Particle Hydrodynamics Tensile Instability
学科领域	Computer Science ; Mechanics
URL	查看原文
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000332264700016
项目资助者	This work has been supported by the National Natural Science Foundation of China (11302237 and 11172306).
课题组名称	LMFS冲击与耦合效应(LHO)
论文分区	二类/Q2
引用统计	被引频次：92[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/48761
专题	流固耦合系统力学重点实验室
通讯作者	Yang, XF (reprint author), Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China.
推荐引用方式 GB/T 7714	Yang XF,Liu MB,Peng SL,et al. Smoothed particle hydrodynamics modeling of viscous liquid drop without tensile instability[J]. COMPUTERS & FLUIDS,2014,92:199-208.
APA	Yang XF,Liu MB,Peng SL,&Yang, XF .(2014).Smoothed particle hydrodynamics modeling of viscous liquid drop without tensile instability.COMPUTERS & FLUIDS,92,199-208.
MLA	Yang XF,et al."Smoothed particle hydrodynamics modeling of viscous liquid drop without tensile instability".COMPUTERS & FLUIDS 92(2014):199-208.

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