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Experimental study of two-dimensional enstrophy cascade

G. Boffetta·A. Cenedese·S. Espa·S. Musacchio
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Abstract

We study the direct enstrophy cascade in a two-dimensional flow generated in an electromagnetically driven thin layer of fluid. Due to the presence of bottom friction, the energy spectrum deviates from the classical Kraichnan prediction $k^{-3}$. We find that the correction to the spectral slope depends on the thickness on the layer, in agreement with a theoretical prediction based on the analogy with passive scalar statistics.

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G. Boffetta, A. Cenedese, S. Espa, S. Musacchio. 2005-05-12. Experimental study of two-dimensional enstrophy cascade. https://arxiv.org/abs/nlin/0505034

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