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Shock Waves pp 335-340 | Cite as

An investigation of shock induced gas mixing in a large cross section shock tube with a laser sheet technique

  • L. Houas
  • G. Jourdan
Conference paper

Abstract

A shock tube experimental investigation, by the use of a laser sheet diagnostic technique, is undertaken to study the Richtmyer-Meshkov instability of both air/SF6 and air/He interfaces. 2-D initial perturbations (membrane technique) with a relatively high wave number and initial amplitude product (kη0∼2) are considered in order to rapidly reach the non-linear and turbulent regimes. The development of the perturbations is captured at the frequency of 10 Khz after the interface acceleration by a Ms=l.l Mach number shock wave. For the light/heavy (air/SF6) case, we observe a quickly distortion of the initial interface with mushroom-like structures, followed by a relatively lighter vortex development before the reflected shock return, increasing the transition to turbulence. In the heavy/light (air/He) case, after a phase inversion, we found that vortex structures quickly appear and seem to be preponderant at late times after successive re-shock compressions. Finally, the light/heavy case measured perturbation ampli- tudes show good agreements with recent models, despite of the still unpredictable influence of the membrane.

Keywords

Shock Wave Shock Tube Laser Sheet Initial Perturbation Incident Shock 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2005

Authors and Affiliations

  • L. Houas
    • 1
  • G. Jourdan
    • 1
  1. 1.Polytech’ Marseille, Département de Mécanique Energétique, IUSTI-Umr CNRS 6595Université de Provence, Technopôle de Château-GombertMarseilleFrance

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