Regensburg 2010 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 29: Spatially Extended Dynamical Systems

DY 29.2: Vortrag

Donnerstag, 25. März 2010, 14:15–14:30, H46

effect of mean flow in spiral turbulence — •hira affan and rudolf friedrich — Institute for Theoretical Physics, University of Muenster, Wilhelm-Klemm-Str. 9, D-48149 Muenster, Germany

Spiral turbulence in Rayleigh-Benard convection is studied numerically in the framework of generalized Swift Hohenberg equations. The model equation consist of an order parameter equation for the temperature field coupled to an equation for the mean flow field. In contrast to previous work nonlinearities in the dynamics of the mean flow are retained leading to a two dimensional Navier-Stokes equation coupled to a Swift-Hohenberg equation. We present detailed investigations of nonlinear effects due to the interaction of nonlinear two dimensional flows and the pattern forming process.