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Intermittency in two-dimensional Ekman-Navier-Stokes turbulence

G. Boffetta·A. Celani·S. Musacchio·M. Vergassola
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Abstract

We study the statistics of the vorticity field in two-dimensional Navier-Stokes turbulence with a linear Ekman friction. We show that the small-scale vorticity fluctuations are intermittent, as conjectured by Nam et al. [Phys. Rev. Lett. vol.84 (2000) 5134]. The small-scale statistics of vorticity fluctuations coincides with the one of a passive scalar with finite lifetime transported by the velocity field itself.

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G. Boffetta, A. Celani, S. Musacchio, M. Vergassola. 2001-11-29. Intermittency in two-dimensional Ekman-Navier-Stokes turbulence. https://doi.org/10.1103/physreve.66.026304

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