The 6th International Conference on Matter and Radiation at Extremes (ICMRE2023)

19 / 2023-03-28 15:34:48

The influence of initial inclined interface on compressible Rayleigh-Taylor instability by the discrete Boltzmann method

Rayleigh-Taylor instability,Thermodynamic non-equilibrium effects

Radiation and Hydrodynamics > Hydrodynamic instability

Rayleigh-Taylor (RT) instability is a basic fluid instability phenomenon, which is a common phenomenon in the nature and engineering fields. Especially, it has been recognized for many years that the most significant limitation of the inertial confinement fusion (ICF) is the RT instability. Since the development of the RT instability often involves hydrodynamic behaviors and kinetic effects at various scales, it is of great theoretical significance and practical value to study the RT instability in depth from different perspectives. In order to better understand the effect of the initial perturbation interface with different inclined angles on the compressible RT instability, the discrete Boltzmann method (DBM) is used to describe the hydrodynamic and thermodynamic non-equilibrium behaviors in the RT process. This report presents the latest numerical simulation results and hopefully this will contribute to a deeper understanding of the physical mechanisms of compressible RT instability from the kinetic view.