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Volume 30 Issue 5
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Chinese Journal of High Pressure Physics  > 2016  >  30(5): 380-386.
WANG Tao, TAO Gang, BAI Jing-Song, LI Ping, WANG Bing, DU Lei. Analysis of Dependence of Multi-Mode Richtmyer-Meshkov Instability on Initial Conditions[J]. Chinese Journal of High Pressure Physics, 2016, 30(5): 380-386. doi: 10.11858/gywlxb.2016.05.006
Citation: WANG Tao, TAO Gang, BAI Jing-Song, LI Ping, WANG Bing, DU Lei. Analysis of Dependence of Multi-Mode Richtmyer-Meshkov Instability on Initial Conditions[J]. Chinese Journal of High Pressure Physics, 2016, 30(5): 380-386. doi: 10.11858/gywlxb.2016.05.006
shu

Analysis of Dependence of Multi-Mode Richtmyer-Meshkov Instability on Initial Conditions

doi: 10.11858/gywlxb.2016.05.006
  • 1.

    School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, China

  • 2.

    Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621999, China

  • Received Date: 13 Feb 2015
  • Rev Recd Date: 21 Apr 2015
    Abstract
  • Using the in-house large-eddy simulation code MVFT, we investigated the three-dimensional multi-mode Richtmyer-Meshkov (RM) instability under multiple impingements and its dependence on initial conditions.After the initial shock, the width of the turbulent mixing zone (TMZ) grows with time in power-law.After the reshock and the impingement of the first reflected rarefaction wave, the TMZ width grows with time in the exponential law but with different growth factors.After the impingement of the first reflected compression wave, it grows with time in an approximately linear fashion, and the statistical quantities in TMZ decay with time in a similar way.The evolution of multi-mode RM instability is greatly dependent on the initial conditions between the initial shock and the impingement of the first reflected rarefaction wave.After the impingement of the first reflected rarefaction wave, the evolution of the turbulent mixing zone has lost the memory of the effect exerted by the initial conditions.

     

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