Nonuniversal power-law spectra in turbulent systems
Fluid Dynamics
2015-06-16 v2
Abstract
Turbulence is generally associated with universal power-law spectra in scale ranges without significant drive or damping. Although many examples of turbulent systems do not exhibit such an inertial range, power-law spectra may still be observed. As a simple model for such situations, a modified version of the Kuramoto-Sivashinsky equation is studied. By means of semi-analytical and numerical studies, one finds power laws with nonuniversal exponents in the spectral range for which the ratio of nonlinear and linear time scales is (roughly) scale-independent.
Keywords
Cite
@article{arxiv.1305.4111,
title = {Nonuniversal power-law spectra in turbulent systems},
author = {Vasil Bratanov and Frank Jenko and David Hatch and Michael Wilczek},
journal= {arXiv preprint arXiv:1305.4111},
year = {2015}
}
Comments
5 pages, 5 figures