Knowledge Management System of Institue of Mechanics, CAS
| 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)
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| Source Publication | Computational Fluid Dynamics 2004 |
| 2004-07-12 | |
| Pages | 307-312 |
| Conference Name | 3rd International Conference on Computational Fluid Dynamics, JUL 12-16, 2004 Toronto, CANADA |
| Conference Date | JUL 12-16, 2004 |
| Conference Place | Toronto, CANADA |
| Abstract | 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. |
| WOS ID | WOS:000240583500042 |
| Indexed By | CPCI-S |
| Language | 英语 |
| Citation statistics | |
| Document Type | 会议论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/13766 |
| Collection | 力学所知识产出(1956-2008) |
| Corresponding Author | Fu DX(傅德薰) |
| Recommended Citation GB/T 7714 | Fu DX,Ma YW,Tian BL,et al. Numerical Simulation of R-M Instability[C]Computational Fluid Dynamics 2004,2004:307-312. |
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