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 , where 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}
}
Comments
previous version replaced, with major changes