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Experiments on the Richtmyer–Meshkov instability: single-scale perturbations on a continuous interface

Published online by Cambridge University Press:  26 April 2006

M. Brouillette
Affiliation:
Graduate Aeronautical Laboratories, California Institute of Technology, Pasadena, CA 91125, USA Present address: Département de Génie Mécanique, Université de Sherbrooke, Sherbrooke, Québec, Canada J1K 2R1.
B. Sturtevant
Affiliation:
Graduate Aeronautical Laboratories, California Institute of Technology, Pasadena, CA 91125, USA

Abstract

We report on experiments to measure the shock-induced growth of sinusoidal perturbations on thick interfaces separating two gases of different densities. The results show that the growth rates are reduced as the interface thickness is increased. A model that accounts for the growth rate reduction caused by the presence of a finite density gradient on the interface is proposed and good agreement is obtained with the experimental results.

Type
Research Article
Copyright
© 1994 Cambridge University Press

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