Richtmyer-Meshkov instability experiments on the Nova laser from nonlinear initial perturbations

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We present the results from a series of experiments recently completed on the Nova laser studying the growth of the Richtmyer-Meshkov instability from an initially nonlinear perturbation. These are the first experimental measurements of the time-dependent mixing of materials at a shocked interface from a high-amplitude, short-wavelength perturbation in a high Mach number regime. The experiments were simulated using CALE, a two-dimensional arbitrary Lagrangian-Eulerian hydrodynamics code. The calculations correctly captured the measured growth of the mixing zone from the initial applied perturbation. The simulations also permitted consideration of nonideal effects (e.g. post-shock decompression) required to compare the results of calculation ... continued below

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24 p.

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Peyser, T.A.; Miller, P.L.; Stry, P.E.; Budil, K.S. & Burke, E.W. February 1, 1996.

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We present the results from a series of experiments recently completed on the Nova laser studying the growth of the Richtmyer-Meshkov instability from an initially nonlinear perturbation. These are the first experimental measurements of the time-dependent mixing of materials at a shocked interface from a high-amplitude, short-wavelength perturbation in a high Mach number regime. The experiments were simulated using CALE, a two-dimensional arbitrary Lagrangian-Eulerian hydrodynamics code. The calculations correctly captured the measured growth of the mixing zone from the initial applied perturbation. The simulations also permitted consideration of nonideal effects (e.g. post-shock decompression) required to compare the results of calculation and experiment with theory. Both the experiment and calculations were found to be in good agreement with recent theories for the nonlinear evolution of the instability.

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24 p.

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OSTI as DE96013660

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  • 5. international workshop on the physics of compressible turbulent mixing, Stony Brook, NY (United States), 18-21 Jul 1995

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  • Other: DE96013660
  • Report No.: UCRL-JC--121573
  • Report No.: CONF-9507167--4
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 285456
  • Archival Resource Key: ark:/67531/metadc669553

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  • February 1, 1996

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  • June 29, 2015, 9:42 p.m.

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  • Feb. 17, 2016, 4:01 p.m.

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Peyser, T.A.; Miller, P.L.; Stry, P.E.; Budil, K.S. & Burke, E.W. Richtmyer-Meshkov instability experiments on the Nova laser from nonlinear initial perturbations, article, February 1, 1996; California. (digital.library.unt.edu/ark:/67531/metadc669553/: accessed November 12, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.