Berlin 2008 – scientific programme
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DY: Fachverband Dynamik und Statistische Physik
DY 17: Poster I
DY 17.55: Poster
Tuesday, February 26, 2008, 16:00–18:00, Poster C
Anomalous transport in turbulent systems — •Holger Zimmermann1, Rudolf Friedrich1, and Frank Jenko2 — 1Institut für Theoretische Phyisk, WWU Münster, Germany — 2Max-Planck-Institut für Plasmaphysik, 85748 Garching, Germany
Patterns and coherent structures in self-organizing turbulent systems have considerable impact on the transport properties of particles. We investigate a simple model to describe pattern formation in plasma core turbulence. It shows the basic patterns observed in plasma turbulence. These are zonal flows, for the case of ion temperature gradient (ITG) driven turbulence, respectively streamers for electron temperature gradient (ETG) driven turbulence. For the sake of simplicity, a two dimensional model, consisting of two coupled partial differential equations, is considered. In addition, the transport of test particles is also computed for the random forced Burgers equation, which serves as a simple model system for fluid turbulence. Comparable to the coherent structures in the plasma system, this system shows the formation of shocks.