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Wednesday, December 02, 2015
3:00 PM - 5:00 PM
J.R. Oppenheimer Collaboration Space, JRO-1

Seminar

Structure of coherent vortices generated by the inverse cascade of 2d turbulence in a finite box

V.V. Lebedev
Landau Institute for Theoretical Physics

We discuss structure and geometrical characteristics of coherent vortices appearing as a result of the inverse cascade in the two-dimensional turbulence in a finite box. We prove the universal flat velocity profile, proposed earlier, and demonstrate that it corresponds to the passive regime of flow fluctuations. We find the vortex core radius and the vortex size and argue that an amount of the vortices generated in the box depends on the system parameters.

Host: Misha Chertkov