Dynamics of quantum turbulence of different spectra

Paul Walmsley; Dmitry Zmeev; Fatemeh Pakpour; Andrei Golov

doi:10.1073/pnas.1312544110

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 language	English
Pages (from-to)	4691-4698
Number of pages	7
Journal	Proceedings of the National Academy of Sciences of the United States of America
Volume	111
Issue number	1
DOIs	https://doi.org/10.1073/pnas.1312544110
Publication status	Published - 25 Mar 2014

Keywords

Superfluid
Turbulence
Quantized Vortices

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AU - Walmsley, Paul

AU - Zmeev, Dmitry

AU - Pakpour, Fatemeh

AU - Golov, Andrei

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AB - 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.

KW - Superfluid

KW - Turbulence

KW - Quantized Vortices

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DO - 10.1073/pnas.1312544110

M3 - Article

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JO - Proceedings of the National Academy of Sciences of the United States of America

JF - Proceedings of the National Academy of Sciences of the United States of America

IS - 1

ER -

Dynamics of quantum turbulence of different spectra

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Keywords

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