Numerical Simulation of R-M Instability

CORC > 力学研究所 > 中国科学院力学研究所 > 力学所知识产出(1956-2008)

	Numerical Simulation of R-M Instability
	Fu DX(傅德薰); Ma YW(马延文); Tian BL(田保林); Fu DX(傅德薰)
	2004-07-12
会议名称	3rd International Conference on Computational Fluid Dynamics, JUL 12-16, 2004 Toronto, CANADA
会议日期	JUL 12-16, 2004
会议地点	Toronto, CANADA
页码	307-312
通讯作者	傅德薰
中文摘要	In order to capture shock waves and contact discontinuities in the field and easy to program with parallel computation a new algorithm is developed to solve the N-S equations for simulation of R-M instability problems. The method with group velocity control is used to suppress numerical oscillations, and an adaptive non-uniform mesh is used to get fine resolution. Numerical results for cylindrical shock-cylindrical interface interaction with a shock Mach number Ms=1.2 and Atwood number A=0.818, 0.961, 0.980 (the interior density of the interface/outer density p(1)/p(2) = 10, 50, 100, respectively), and for the planar shock-spherical interface interaction with Ms=1.2 and p(1)/p(2) = 14.28are presented. The effect of Atwood number and multi-mode initial perturbation on the R-M instability are studied. Multi-collisions of the reflected shock with the interface is a main reason of nonlinear development of the interface instability and formation of the spike-bubble structures In simulation with double mode perturbation vortex merging and second instability are found. After second instability the small vortex structures near the interface produced. It is important factor for turbulent mixing.
收录类别	CPCI-S
会议录	Computational Fluid Dynamics 2004
学科主题	力学
语种	英语
ISSN号	3-540-31800-3
WOS记录号	WOS:000240583500042
内容类型	会议论文
源URL	[http://dspace.imech.ac.cn/handle/311007/13766]
专题	力学研究所_力学所知识产出(1956-2008)
通讯作者	Fu DX(傅德薰)
推荐引用方式 GB/T 7714	Fu DX,Ma YW,Tian BL,et al. Numerical Simulation of R-M Instability[C]. 见:3rd International Conference on Computational Fluid Dynamics, JUL 12-16, 2004 Toronto, CANADA. Toronto, CANADA. JUL 12-16, 2004.