Dynamics of quantum turbulence of different spectra

Paul Walmsley, Dmitry Zmeev, Fatemeh Pakpour, Andrei Golov

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    Abstract

    Turbulence in a superfluid in the zero-temperature limit consists of a dynamic tangle of quantized vortex filaments. Different types of turbulence are possible depending on the level of correlations in the orientation of vortex lines. We provide an overview of turbulence in superfluid 4He with a particular focus on recent experiments probing the decay of turbulence in the zero-temperature regime below 0.5 K. We describe extensive measurements of the vortex line density during the free decay of different types of turbulence: ultraquantum and quasiclassical turbulence in both stationary and rotating containers. The observed decays and the effective dissipation as a function of temperature are compared with theoretical models and numerical simulations.
    Original languageEnglish
    Pages (from-to)4691-4698
    Number of pages7
    JournalProceedings of the National Academy of Sciences of the United States of America
    Volume111
    Issue number1
    DOIs
    Publication statusPublished - 25 Mar 2014

    Keywords

    • Superfluid
    • Turbulence
    • Quantized Vortices

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