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Conference paper, 2005

Large scale flows and coherent structure phenomena in flute mode turbulence

Sandberg, Ingmar; Andrushchenko, Zhanna; Pavlenko, Vladimir P

Abstract

The properties of zonal and streamer flows in flute mode turbulence are studied. The stability criteria and the frequency of these flows are determined in terms of the spectra of turbulent fluctuations. Furthermore, it is shown that zonal flows can undergo a further nonlinear evolution leading to the formation of long-lived coherent structures. These structures consist of self-bound wave packets supporting stationary shear layers, and thus can be characterized as regions with a reduced level of anomalous transport

Published in

Title: ECA Vol. 29C, P-2.040

Conference

32nd EPS Conference on Plasma Physics

    Permanent link to this page (URI)

    https://res.slu.se/id/publ/18103