Suppression of the Richtmyer-Meshkov instability due to a density transition layer at the interface.

  title={Suppression of the Richtmyer-Meshkov instability due to a density transition layer at the interface.},
  author={Takayoshi Sano and Kazuki Ishigure and Francisco Cobos-Campos},
  journal={Physical review. E},
  volume={102 1-1},
We have investigated the effects of a smooth transition layer at the contact discontinuity on the growth of the Richtmyer-Meshkov instability (RMI) by hydrodynamic numerical simulations, and we derived an empirical condition for the suppression of the instability. The transition layer has little influence on the RMI when the thickness L is narrower than the wavelength of an interface modulation λ. However, if the transition layer becomes broader than λ, the perturbed velocity associated with… 
2 Citations

Figures and Tables from this paper

Alfvén Number for the Richtmyer–Meshkov Instability in Magnetized Plasmas

  • T. Sano
  • Physics
    The Astrophysical Journal
  • 2021
The magnetohydrodynamical (MHD) evolution of the Richtmyer–Meshkov instability (RMI) is investigated using two-dimensional MHD simulations. The RMI is suppressed by a strong magnetic field, whereas




  • Rev. E 96, 013102
  • 2017

The Physics of Inertial Fusion: Beam Plasma Interaction, Hydrodynamics, Hot Dense Matter

Foreword Preface 1. Nuclear Fusion Reactions 2. Thermonuclear Fusion and Confinement 3. Inertial Confinement by Spherical Implosion 4. Ignition and Burn 5. Energy Gain 6. Hydrodynamics 7. Thermal


  • Fluids 15, 753
  • 1972

Inertial-confinement fusion with lasers

The quest for controlled fusion energy has been ongoing for over a half century. The demonstration of ignition and energy gain from thermonuclear fuels in the laboratory has been a major goal of

Instability of the interface of two gases accelerated by a shock wave

Results are presented of an experimental study of the stability of the interface of two gases traversed by ashockwave. It is found that the interface is unstable both in the case of shock wave

Numerical Investigation of the Stability of a Shock‐Accelerated Interface between Two Fluids

Recent experiments by Meshkov have demonstrated that a shock‐accelerated perturbed surface separating two gases of different densities is unstable for shocks traveling from the lighter gas to the

Experiments on the Richtmyer-Meshkov instability: Wall effects and wave phenomena

Experiments examining the interaction of shock waves with an interface separating two gases of different densities are reported. Flow visualization by the schlieren method and x-ray densitometry

Rayleigh–Taylor stability for a normal shock wave–density discontinuity interaction

The solution for the perturbation growth of a shock wave striking a density discontinuity at a material interface is developed. The Laplace transformation of the perturbation results in an equation

High Mach number mix instability experiments of an unstable density interface using a single-mode, nonlinear initial perturbation

The growth of an unstable density interface from a nonlinear, single-mode, two-dimensional initial perturbation (10 μm amplitude; 23 μm wavelength) has been studied experimentally using a miniature