Numerical Simulation of Violent Impinging Jet Flows with Improved SPH   Method

doi:10.1142/S0219876216410012

CORC > 北京大学 > 工学院

	Numerical Simulation of Violent Impinging Jet Flows with Improved SPH Method
	Shao, J. R. ; Li, S. M. ; Liu, M. B.
刊名	INTERNATIONAL JOURNAL OF COMPUTATIONAL METHODS
	2016
关键词	SPH impinging jet impact velocity solid boundary treatment SMOOTHED PARTICLE HYDRODYNAMICS FINITE-ELEMENT-METHOD VISCOUS-FLUID TANKS SURFACE
DOI	10.1142/S0219876216410012
英文摘要	This paper presents an implementation of an improved smoothed particle hydrodynamics (SPH) method for simulating violent water impinging jet flow problems. The presented SPH method involves three major modifications on the traditional SPH method, (1) The kernel gradient correction (KGC) and density correction are used to improve the computational accuracy and obtain smoothed pressure field, (2) a coupled dynamic solid boundary treatment (SBT) is used to remove the numerical oscillation near the solid boundary and ensure no penetration condition, (3) a free surface condition, which is obtained from the summation of kernel function and volume, is used to describe the water jet accurately. Different cases about violent impinging jet flows are simulated. The influences of impact velocity and angles are investigated. It is demonstrated that the presented SPH method has very good performance with accurate impinging jet patterns and pressure field distribution. It is also found that the pressure time histories of observation points are greatly influenced by the rarefaction wave from surrounding air. Closer distance from free surface can lead to quicker decay of the pressure time history.; National Natural Science Foundation of China [11172306]; NSAF [U1530110]; Institute of Systems Engineering, CAEP [2013KJZ01]; SCI(E); EI; ARTICLE; shaojiaru@cqut.edu.cn; hustmingsl@126.com; mbliu@pku.edu.cn; 4,SI; 13
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/491745]
专题	工学院
推荐引用方式 GB/T 7714	Shao, J. R.,Li, S. M.,Liu, M. B.. Numerical Simulation of Violent Impinging Jet Flows with Improved SPH Method[J]. INTERNATIONAL JOURNAL OF COMPUTATIONAL METHODS,2016.
APA	Shao, J. R.,Li, S. M.,&Liu, M. B..(2016).Numerical Simulation of Violent Impinging Jet Flows with Improved SPH Method.INTERNATIONAL JOURNAL OF COMPUTATIONAL METHODS.
MLA	Shao, J. R.,et al."Numerical Simulation of Violent Impinging Jet Flows with Improved SPH Method".INTERNATIONAL JOURNAL OF COMPUTATIONAL METHODS (2016).