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.

Authors

  • Michele Buzzicotti

    Dept. Physics University of Rome ``Tor Vergata''

  • Luca Biferale

    Dept. Physics University of Rome ``Tor Vergata'', University of Rome ``Tor Vergata'', Department of Physics, University of Rome Tor Vergata, Rome, Italy

  • Uriel Frisch

    CNRS, Observatory of Nice

  • Samriddhi Ray

    Tata Institute of Fundamental Research