Kinetic interpretation of the classical Rayleigh-Taylor instability.

@article{Rodman2022KineticIO,
  title={Kinetic interpretation of the classical Rayleigh-Taylor instability.},
  author={J. A. Rodman and Petr Cagas and Ammar H. Hakim and Bhuvana Srinivasan},
  journal={Physical review. E},
  year={2022},
  volume={105 6-2},
  pages={
          065209
        }
}
Rayleigh-Taylor (RT) instabilities are prevalent in many physical regimes ranging from astrophysical to laboratory plasmas and have primarily been studied using fluid models, the majority of which have been ideal fluid models. This work presents a five-dimensional (two spatial dimensions, three velocity space dimensions) simulation using the continuum-kinetic model to study the effect of the collisional mean free path and transport on the instability growth. The continuum-kinetic model provides… 

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SHOWING 1-10 OF 38 REFERENCES
Continuum Kinetic Simulations of Plasma Sheaths and Instabilities
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A phenomenological description of the observed acceleration is provided, and this behavior is ascribed to the formation of Kelvin-Helmholtz vortices on the bubble-spike interface that diminish the friction drag, while the associated induced flow propels the bubbles forward.
Knudsen-number dependence of two-dimensional single-mode Rayleigh-Taylor fluid instabilities.
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Good agreement between theoretical predictions and simulations is found and, at late times, the development of secondary instabilities is observed, similar to hydrodynamic simulations and experiments.
Exploration of the transition from the hydrodynamiclike to the strongly kinetic regime in shock-driven implosions.
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Clear evidence of the transition from hydrodynamiclike to strongly kinetic shock-driven implosions is revealed and quantitatively assessed, and a reduced ion kinetic (RIK) model that includes gradient-diffusion and loss-term approximations to several transport processes reproduce the observed yield trends.
A Model for Collision Processes in Gases. I. Small Amplitude Processes in Charged and Neutral One-Component Systems
A kinetic theory approach to collision processes in ionized and neutral gases is presented. This approach is adequate for the unified treatment of the dynamic properties of gases over a continuous
The Magnetic Rayleigh-Taylor Instability in Three Dimensions
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TWO-DIMENSIONAL BLAST-WAVE-DRIVEN RAYLEIGH-TAYLOR INSTABILITY: EXPERIMENT AND SIMULATION
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Nonlinear mixing behavior of the three-dimensional Rayleigh–Taylor instability at a decelerating interface
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The effect of viscosity and resistivity on Rayleigh–Taylor instability induced mixing in magnetized high-energy-density plasmas
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