Helicity transfer in turbulent models

L. Biferale, D. Pierotti, F. Toschi

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    19 Citations (Scopus)

    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 equations, is derived and tested. The odd part of the helicity flux statistics is found to be dominated by a few very intense events. In a particular model, we calculate analytically leading and subleading contributions to the scaling of triple velocity correlation.
    Original languageEnglish
    Pages (from-to)R2515-R2518
    JournalPhysical Review E: Statistical, Physics, Plasmas, Fluids, and Related Interdisciplinary Topics
    Volume57
    Issue number3
    DOIs
    Publication statusPublished - 1998

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