Long-term effect of Rayleigh-Taylor stabilization on converging Richtmyer-Meshkov instability
TLDR
In this paper, the Richtmyer-Meshkov instability on a three-dimensional single-mode light/heavy interface is experimentally studied in a converging shock tube, and it is quantitatively found that the perturbation amplitude experiences a rapid growth to a maximum value after shock compression and finally drops quickly before the reshock.Abstract:
The Richtmyer–Meshkov instability on a three-dimensional single-mode light/heavy interface is experimentally studied in a converging shock tube. The converging shock tube has a slender test section so that the non-uniform feature of the shocked flow is amply exhibited in a long testing time. A deceleration phenomenon is evident in the unperturbed interface subjected to a converging shock. The single-mode interface presents three-dimensional characteristics because of its minimum surface feature, which leads to the stratified evolution of the shocked interface. For the symmetry interface, it is quantitatively found that the perturbation amplitude experiences a rapid growth to a maximum value after shock compression and finally drops quickly before the reshock. This quick reduction of the interface amplitude is ascribed to a significant Rayleigh–Taylor stabilization effect caused by the deceleration of the light/heavy interface. The long-term effect of the Rayleigh–Taylor stabilization even leads to a phase inversion on the interface before the reshock when the initial interface has sufficiently small perturbations. It is also found that the amplitude growth is strongly suppressed by the three-dimensional effect, which facilitates the occurrence of the phase inversion.read more
Citations
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Turbulent mixing and transition criteria of flows induced by hydrodynamic instabilities
Ye Zhou,Timothy T. Clark,Daniel S. Clark,S. Gail Glendinning,M. Aaron Skinner,Channing Huntington,Omar Hurricane,Andris Dimits,Bruce Remington +8 more
TL;DR: In this paper, the authors present a pedagogical review of hydrodynamic instability-induced turbulent flows, including Rayleigh-Taylor, Richtmyer-Meshkov, and Kelvin-Helmholtz instabilities.
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Turbulent Mixing and Transition Criteria of Flows Induced by Hydrodynamic Instabilities
TL;DR: In this paper, a pedagogical review of hydrodynamic instability-induced turbulent flows is presented, with a focus on the initial conditions of such flows and accurately predicting the transitional flows.
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Collaboration and competition between Richtmyer-Meshkov instability and Rayleigh-Taylor instability
TL;DR: In this paper, the Richtmyer-Meshkov Instability (RMI) system and the coexisting system combined with Rayleigh-Taylor Instability(RTI) are simulated with a multiple-relaxation time discrete Boltzmann model.
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Nonequilibrium and morphological characterizations of Kelvin-Helmholtz instability in compressible flows
TL;DR: In this article, the effects of viscosity and heat conduction on the onset and growth of Kelvin-Helmholtz instability via an efficient discrete Boltzmann model were investigated.
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Nonlinear behaviour of convergent Richtmyer-Meshkov instability
TL;DR: In this article, a novel shock tube is designed to investigate the nonlinear feature of convergent Richtmyer-Meshkov instability on a single-mode interface formed by a soap film technique.
References
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The Instability of Liquid Surfaces when Accelerated in a Direction Perpendicular to their Planes. I
TL;DR: In this article, it was shown that when two superposed fluids of different densities are accelerated in a direction perpendicular to their interface, this surface is stable or unstable according to whether the acceleration is directed from the heavier to the lighter fluid or vice versa.
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Instability of the interface of two gases accelerated by a shock wave
TL;DR: In this paper, an experimental study of the stability of the interface of two gases traversed by ash-wave was conducted and it was found that the interface is unstable both in the case of shock wave passage from the lighter to the heavier gas and for passage in the opposite direction.