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Is Multiscaling an Artifact in the Stochastically Forced Burgers Equation?

Chaotic Dynamics 2009-11-10 v2 Statistical Mechanics Analysis of PDEs

Abstract

We study turbulence in the one-dimensional Burgers equation with a white-in-time, Gaussian random force that has a Fourier-space spectrum 1/k\sim 1/k, where kk is the wave number. From very-high-resolution numerical simulations, in the limit of vanishing viscosity, we find evidence for multiscaling of velocity structure functions which cannot be falsified by standard tests. We find a new artifact in which logarithmic corrections can appear disguised as anomalous scaling and conclude that bifractal scaling is likely.

Keywords

Cite

@article{arxiv.nlin/0406049,
  title  = {Is Multiscaling an Artifact in the Stochastically Forced Burgers Equation?},
  author = {Dhrubaditya Mitra and Jeremie Bec and Rahul Pandit and Uriel Frisch},
  journal= {arXiv preprint arXiv:nlin/0406049},
  year   = {2009}
}

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