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Large-Eddy Simulation of the Three-Dimensional Experiment on Richtmyer-Meshkov Instability Induced Turbulence
Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang, China
Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang, China
Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang, China
Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang, China
Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang, China
Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang, China
Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang, China
Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang, China
Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang, China
National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang, China
- 1 Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang, China
- 2 Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang, China
- 3 Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang, China
- 4 Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang, China
- 5 Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang, China
- 6 Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang, China
- 7 Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang, China
- 8 Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang, China
- 9 Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang, China
- 10 National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang, China
International Journal of Astronomy and Astrophysics·Volume 02 (2012)·Pages 28–36·Published 28 March 2012·DOI10.4236/ijaa.2012.21005
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Abstract
A program MVFT3D of large-eddy simulation is developed and performed to solve the multi compressible Navier- Stokes equations. The SGS dissipation and molecular viscosity dissipation have been analyzed, and the former is much larger than the later. Our test shows that the SGS dissipation of Vreman model is smaller than the Smagorinsky model. We mainly simulate the experiment of fluid instability of shock-accelerated interface by Poggi in this paper. The decay of the turbulent kinetic energy before the first reflected shock wave–mixing zone interaction and its strong enhancement by re-shocks are presented in our numerical simulations. The computational mixing zone width under double re-shock agreement well with the experiment, and the decaying law of the turbulent kinetic energy is consistent with Mohamed and Larue’s investigation. Also, by using MVFT3D we give some simulation results of the inverse Chevron model from AWE. The numerical simulations presented in this paper allow us to characterize and better understand the Richtmyer-Meshkov instability induced turbulence, and the code MVFT3D is validated.
KeywordsMVFT3DLarge Eddy SimulationSGSInterface InstabilityTurbulence Mixing
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