Turbulence Statistics in a Two-Dimensional Vortex Condensate.

  title={Turbulence Statistics in a Two-Dimensional Vortex Condensate.},
  author={Anna Frishman and Corentin Herbert},
  journal={Physical review letters},
  volume={120 20},
Disentangling the evolution of a coherent mean-flow and turbulent fluctuations, interacting through the nonlinearity of the Navier-Stokes equations, is a central issue in fluid mechanics. It affects a wide range of flows, such as planetary atmospheres, plasmas, or wall-bounded flows, and hampers turbulence models. We consider the special case of a two-dimensional flow in a periodic box, for which the mean flow, a pair of box-size vortices called "condensate," emerges from turbulence. As was… 

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