Review of experiments and calculations of the compressible richtmyer-meshkov instability from a single-mode, nonlinear initial perturbation

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We review experiments and calculations of the compressible Richtmyer-Meshkov instability from a single-mode, nonlinear initial perturbation. These experiments were performed using the Nova laser. Measurements of the time-evolution of the mixing region were reported previously. We compared the experimental measurements with numerical simulations [1,2]. We found both experiment and simulation to be in good agreement with recent theories for the nonlinear evolution of the instability [3,4]. Experimental results beyond those previously presented provide additional support for the use of two phase flow models to describe the flow in the nonlinear regime. These experiments include measurement of the mixing region at ... continued below

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9 p.

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Peyser, T.A.; Murray, S.D.; Farley, D.R.; Logory, L.M.; Stry, P.E.; Budil, K.S. et al. June 12, 1997.

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We review experiments and calculations of the compressible Richtmyer-Meshkov instability from a single-mode, nonlinear initial perturbation. These experiments were performed using the Nova laser. Measurements of the time-evolution of the mixing region were reported previously. We compared the experimental measurements with numerical simulations [1,2]. We found both experiment and simulation to be in good agreement with recent theories for the nonlinear evolution of the instability [3,4]. Experimental results beyond those previously presented provide additional support for the use of two phase flow models to describe the flow in the nonlinear regime. These experiments include measurement of the mixing region at additional times, including times earlier in the evolution of the instability than previously reported. We have also carried out experiments to examine the difference in the evolution of the instability from initial perturbations consisting of circular sawtooth grooves as well as rectilinear sawteeth. Our previous two-dimensional numerical simulations approximated the experimental linear grooves as circular grooves. We reasoned that the difference between the two cases would be small, based on scaling arguments, and limited to a very small region near the centerline. New experimental and numerical results confirm this. Finally, we discuss some additional issues in the derivation of the two-phase flow model used previously in describing the growth of the Richtmyer-Meshkov instability in the nonlinear phase relevant to other work presented at this meeting [5,6].

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9 p.

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INIS; OSTI as DE98050921

Other: FDE: PDF; PL:

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  • 6. international workshop on physics of compressible turbulent mixing, Marseille (France), 18-21 Jun 1997

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  • Other: DE98050921
  • Report No.: UCRL-JC--125747
  • Report No.: CONF-970657--
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 301929
  • Archival Resource Key: ark:/67531/metadc682371

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  • June 12, 1997

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  • July 25, 2015, 2:20 a.m.

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  • April 6, 2017, 6:21 p.m.

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Peyser, T.A.; Murray, S.D.; Farley, D.R.; Logory, L.M.; Stry, P.E.; Budil, K.S. et al. Review of experiments and calculations of the compressible richtmyer-meshkov instability from a single-mode, nonlinear initial perturbation, article, June 12, 1997; California. (digital.library.unt.edu/ark:/67531/metadc682371/: accessed September 25, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.