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Helicity Transfer in Turbulent Models

L. Biferale·D. Pierotti·F. Toschi
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Abstract

Helicity transfer in a shell model of turbulence is investigated. We show that a Reynolds-independent helicity flux is present in the model when the large scale forcing breaks inversion symmetry. The equivalent in Shell Models of the ``2/15 law'', obtained from helicity conservation in Navier-Stokes eqs., is derived and tested. The odd part of helicity flux statistic is found to be dominated by a few very intense events. In a particular model, we calculate analytically leading and sub-leading contribution to the scaling of triple velocity correlation.

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L. Biferale, D. Pierotti, F. Toschi. 1997-07-21. Helicity Transfer in Turbulent Models. https://doi.org/10.1103/physreve.57.r2515

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