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Nonuniversal power law spectra in turbulent systems | | Vasil Bratanov
; Frank Jenko
; David Hatch
; Michael Wilczek
; | | Date: |
17 May 2013 | | 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. | | Source: | arXiv, 1305.4111 | | Services: | Forum | Review | PDF | Favorites | |
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