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.

*Partially supported by ERC Grant No 339032.

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