Abstract
The interaction between the shock wave and phase interface is one of the classic problems in aerospace and turbulent combustion engineering. In this paper, the instability of the gas–liquid interface driven by non-classical planar shock waves is studied. Based on the volume of fluid model and large eddy simulation method, the deformation process and the turbulent mixing phenomenon of the oblique interface induced by non-classical planar shock waves in a two-dimensional plane are numerically investigated by using a high-performance computer cluster. The effects of incident shock wave intensity, initial amplitude, initial wavelength, and inclined angle of the gas–liquid two-phase oblique interface are analyzed. The results show that the incident shock intensity has the most significant effect on the interface deformation and the development of turbulent mixing, and the initial amplitude and wavelength of the incident shock and the inclined interface angle also play a certain role in the deformation and development process. Overall, the width of the turbulent mixing zone increases with time under a given condition, and the convex structure will fall off and break up at the phase interface in the later stage of turbulent mixing.
Highlights
The interaction between the shock wave and phase interface is one of the classic problems in aerospace and turbulent combustion engineering
In view of the importance of non-classical planar shock wave correlation characteristics in inertial confinement fusion (ICF) and other engineering applications, this paper combines the Volume of Fluid (VOF) model and large eddy simulation method to simulate the phenomenon of the gas–liquid oblique interface deformation and turbulent mixing induced by two-dimensional non-classical planar shock waves
Based on the VOF model and large eddy simulation method, a two-dimensional numerical simulation was carried out for the phenomenon of gas–liquid two-phase oblique interface deformation and turbulent mixing induced by non-classical planar shock waves under different initial conditions
Summary
The interaction between the shock wave and phase interface is one of the classic problems in aerospace and turbulent combustion engineering. Olmstead et al. experimentally studied the evolution of a shock front around a SF6 cylinder, and the results showed the influence of the incident shock intensity and inclination angle on interface deformation and turbulent mixing. In view of the importance of non-classical planar shock wave correlation characteristics in inertial confinement fusion (ICF) and other engineering applications, this paper combines the Volume of Fluid (VOF) model and large eddy simulation method to simulate the phenomenon of the gas–liquid oblique interface deformation and turbulent mixing induced by two-dimensional non-classical planar shock waves. The simulation results reveal the influence of the incident shock intensity, initial amplitude, initial wavelength, and inclined interface angle on the development process of gas–liquid two-phase inclined interface turbulent mixing, which has a certain guiding significance for further research on the related characteristics of non-classical planar shock waves
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