Evolution of Richtmyer-Meshkov instability with single-mode perturbation

Dong Jun Ma, De Jun Sun, Jeong Yeol Choi, Vigor Yang

研究成果: Conference contribution

摘要

The Richtmyer-Meshkov instability occurs when a perturbed interface between two fluids of different densities is impulsively accelerated by a shock wave. A major issue with the Richtmyer-Meshkov instability is the nonlinear growth of the interpenetrating mixing layer and ensuring turbulent mixing. The present paper represents a numerical investigation on the nonlinear evolution of the Richtmyer-Meshkov instability excited by a high-amplitude single-mode perturbation. The work simulates the Mach 1.15 shock tube experiment of Jourdan and Houas [Phys. Rev. Lett. 95, 204502, 2005]. An asymptotic analysis is also performed to provide more direct insight. Four different cases of air/SF 6, air/CO2, air/N2, and air/He are are studied, covering a wide range of Atwood numbers of -0.77∼0.6. A mixture-type interface capturing method, which can effectively avoid numerical oscillations on the interface discontinuities, is used to simulate the multi-fluid flows. The high-resolution Piecewise-Parabolic-Method (PPM) with a multi-fluid Riemann solver is employed to solve the proposed model equations. Calculated results show good agreement with experimental data and theoretical predictions.

原文English
主出版物標題46th AIAA Aerospace Sciences Meeting and Exhibit
出版狀態Published - 2008
事件46th AIAA Aerospace Sciences Meeting and Exhibit - Reno, NV, United States
持續時間: 2008 1月 72008 1月 10

出版系列

名字46th AIAA Aerospace Sciences Meeting and Exhibit

Other

Other46th AIAA Aerospace Sciences Meeting and Exhibit
國家/地區United States
城市Reno, NV
期間08-01-0708-01-10

All Science Journal Classification (ASJC) codes

  • 航空工程

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