Turbulent Mixing Induced by Richtmyer-Meshkov Instability
Richtmyer-Meshkov(RM)instability and the induced turbulent mixing are common scientific problems in significant engineering applications such as inertial confinement fusion,supersonic combustion,and weapon implosion.Previous studies were mainly focused on the growth of RM instability at the early stage.Baroclinic vorticity and pressure disturbance were found to be the dominant physical mechanisms driving the instability growth.Recently,increasing efforts and attempts have been made to explore the RM instability-induced turbulent mixing due to the development of experimental diagnostic and high-performance computing.In this manuscript,we systematically review the research progress on RM turbulence during the past decade.First,we describe the key physical quantities developed to characterize the RM turbulence,and then elucidate the main mechanisms of turbulent mixing.A detailed introduction is also provided on the influences of initial conditions(including Atwood number,Mach number,viscosity,reflected wave pattern,viscosity effect,reflected shock effect,geometric effect,and dimensionality)on the RM turbulent mixing.Finally,future directions for experiments and numerical simulations of RM turbulent mixing are outlined.
Richtmyer-Meshkov instabilityshock waveinterfacetransition to turbulenceturbulent mixing
NETL
NSTL
万方数据
