Experiments on the late-time development of single-mode Richtmyer-Meshkov instability

Jeffrey W Jacobs, V. V. Krivets

Research output: Contribution to journalArticle

91 Citations (Scopus)

Abstract

The late-time development of Richtmyer-Meshkov instability is studied in shock tube experiments. This investigation makes use of the experimental apparatus and visualization methods utilized in the earlier study of Collins and Jacobs [J. Fluid Mech. 464, 113 (2002)] but employs stronger shocks and initial perturbations with shorter wavelengths to obtain much later-time (in the dimensionless sense) images of the single-mode instability. These modifications produce a very detailed look at the evolution of the late-time single-mode instability, revealing the transition and development of turbulence in the vortex cores that eventually results in the disintegration of the laminar vortex structures into small scale features. Amplitude measurements taken from these images are shown to be effectively collapsed when plotted in dimensionless variables defined using the wave number and the initial growth rate. The amplitude measurements are compared with several late-time nonlinear models and solutions. The best agreement is obtained with the model of Sadot [Phys. Rev. Lett. 80, 1654 (1998)] which can be slightly improved by modifying the expression for the late-time asymptotic growth rate.

Original languageEnglish (US)
JournalPhysics of Fluids
Volume17
Issue number3
DOIs
StatePublished - Mar 2005

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Vortex flow
Shock tubes
Disintegration
Experiments
vortices
Turbulence
Visualization
shock tubes
disintegration
Wavelength
Fluids
turbulence
shock
perturbation
fluids
wavelengths

ASJC Scopus subject areas

  • Mechanics of Materials
  • Computational Mechanics
  • Physics and Astronomy(all)
  • Fluid Flow and Transfer Processes
  • Condensed Matter Physics

Cite this

Experiments on the late-time development of single-mode Richtmyer-Meshkov instability. / Jacobs, Jeffrey W; Krivets, V. V.

In: Physics of Fluids, Vol. 17, No. 3, 03.2005.

Research output: Contribution to journalArticle

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