Kolmogorov scaling and intermittency in Rayleigh-Taylor turbulence

Details Kolmogorov scaling and intermittency in Rayleigh-Taylor turbulence Kolmogorov scaling and intermittency in Rayleigh-Taylor turbulence

2009-02-09

arxiv.org/abs/0902.1452v1

Nonlinear Sciences

Chaotic Dynamics

4 pages, 5 figures

Scientific paper

The Rayleigh--Taylor (RT) turbulence is investigated by means of high resolution numerical simulations. The main question addressed here is on whether RT phenomenology can be considered as a manifestation of universality of Navier--Stokes equations with respect to forcing mechanisms. At a theoretical level the situation is far from being firmly established and, indeed, contrasting predictions have been formulated. Our first aim here is to clarify the above controversy through a deep analysis of scaling behavior of relevant statistical observables. The effects of intermittency on the mean field scaling predictions is also discussed.

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