Richtmyer-Meshkov instability growth : Experiment, simulation and theory

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

175 Scopus Citations
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Author(s)

  • Richard L. Holmes
  • Guy Dimonte
  • Bruce Fryxell
  • Michael L. Gittings
  • John W. Grove
  • Marilyn Schneider
  • David H. Sharp
  • Alexander L. Velikovich
  • Robert P. Weaver

Detail(s)

Original languageEnglish
Pages (from-to)55-79
Journal / PublicationJournal of Fluid Mechanics
Volume389
Publication statusPublished - 25 Jun 1999
Externally publishedYes

Abstract

Richtmyer-Meshkov instability is investigated for negative Atwood number and two-dimensional sinusoidal perturbations by comparing experiments, numerical simulations and analytic theories. The experiments were conducted on the NOVA laser with strong radiatively driven shocks with Mach numbers greater than 10. Three different hydrodynamics codes (RAGE, PROMETHEUS and FronTier) reproduce the amplitude evolution and the gross features in the experiment while the fine-scale features differ in the different numerical techniques. Linearized theories correctly calculate the growth rates at small amplitude and early time, but fail at large amplitude and late time. A nonlinear theory using asymptotic matching between the linear theory and a potential flow model shows much better agreement with the late-time and large-amplitude growth rates found in the experiments and simulations. We vary the incident shock strength and initial perturbation amplitude to study the behaviour of the simulations and theory and to study the effects of compression and nonlinearity.

Citation Format(s)

Richtmyer-Meshkov instability growth : Experiment, simulation and theory. / Holmes, Richard L.; Dimonte, Guy; Fryxell, Bruce; Gittings, Michael L.; Grove, John W.; Schneider, Marilyn; Sharp, David H.; Velikovich, Alexander L.; Weaver, Robert P.; Zhang, Qiang.

In: Journal of Fluid Mechanics, Vol. 389, 25.06.1999, p. 55-79.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review