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Nonuniversal Power-law Spectra in Turbulent Systems by Bratanov, Vasil; Jenko, Frank; Hatch, David; Wilczek, Michael is a scholarly article available to read on EtoBox.

What is Nonuniversal Power-law Spectra in Turbulent Systems about?

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.

Author

Bratanov, Vasil; Jenko, Frank; Hatch, David; Wilczek, Michael

Published

2013

Language

EN