Coherent vortices in 2D turbulence

Coherent vortices in 2D turbulence

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Vladimir Lebedev , Institute for Theoretical Physics, Russian Academy of Sciences
Fine Hall 601

Two-dimensional turbulence generated in a finite box produces large-scale coherent flow with relatively weak fluctuations on its ground. The coherent flow contains vortices with velocity much greater than the typical coherent flow velocity. The vortices are isotropic and have some scaling structure with a number of different subregions. We describe the phenomenology of the vortices based mainly on numerical data.