Burgers Turbulence on a Fractal Fourier set
ORAL
Abstract
We present a systematic investigation of the effects introduced by a fractal decimation in Fourier space on stochastically forced one-dimensional Burgers equations. The aim is to understand the statistical robustness of the shock singularity under different reductions of the number of the degrees of freedom. We perform a series of direct numerical simulations by using a pseudo-spectral code with resolution up to 16384 points and for various dimensions of the fractal set of Fourier modes D$_F$ \textless 1. We present results concerning the scaling properties of statistical measures in real space and the probability distribution functions of local and non-local triads in Fourier space.
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Authors
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Michele Buzzicotti
Dept. Physics University of Rome ``Tor Vergata''
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Luca Biferale
Dept. Physics University of Rome ``Tor Vergata'', University of Rome ``Tor Vergata'', Department of Physics, University of Rome Tor Vergata, Rome, Italy
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Uriel Frisch
CNRS, Observatory of Nice
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Samriddhi Ray
Tata Institute of Fundamental Research