Richtmyer-Meshkov Instability in a Vertical Shock Tube

  • G. Rodriguez
  • I. Galametz
  • H. Croso
  • J.-F. Haas
Conference paper

Abstract

We describe shock tube experiments on the behaviour of heavy/light gas interfaces submitted to acceleration by an incident shock wave and decelerations by several shock waves reflected from the tube end-wall. The interface, separating two gases of very different density: sulphur hexafluoride (SF6)-air or xenon (Xe)-air, is subjected to the Richtmyer-Meshkov instability (RMI) at the passage of the shock waves. The initial planar interface are either continuous or discontinuous. Schlieren images of the flow are recorded by a high-speed camera and measurements of xenon partial density are obtained from flash X-ray photographs. Planar discontinuous interfaces thicken after interaction with reflected shocks and appear turbulent. The planar continuous interfaces appear non-turbulent and do not thicken much until the second reshock. The Xe-air interface actually thickens less than the SF6-air interface because of shock bifurcation in the boundary layer in the second case. The non-dimensional growth rates are in agreement with the results of similar experiments performed at Caltech by Brouillette and Sturtevant (1993) and Bonazza and Sturtevant (1994).

Key words

Richtmyer-Meshkov instability Schlieren imaging X-ray densitometry 

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References

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Copyright information

© Springer-Verlag Berlin Heidelberg 1995

Authors and Affiliations

  • G. Rodriguez
    • 1
  • I. Galametz
    • 1
  • H. Croso
    • 1
  • J.-F. Haas
    • 1
  1. 1.Centre d’études de Vaujours-MoronvilliersCommissariat à l’Energie AtomiqueCourtryFrance

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