Coherent vortex structures in quantum turbulence

Baggaley, A.W., Barenghi, C.F., Shukurov, A. and Sergeev, Y.A. (2012) Coherent vortex structures in quantum turbulence. Europhysics Letters, 98(2), p. 26002. (doi: 10.1209/0295-5075/98/26002)

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Quantum turbulence, easily generated in superfluid helium, consists of a disordered tangle of thin, discrete vortex lines of quantised circulation which move in a fluid without viscosity. In this report we show that, in very intense quantum turbulence, the vortex tangle contains small coherent vortical structures (bundles of quantised vortices) which arise from the fundamental Biot-Savart interaction between vortices, and which are similar to the intermittent, coherent structures ("worms") observed in ordinary viscous turbulence. Our result highlights the similarity between quantum turbulence and ordinary turbulence, and sheds new light into the origin of the "worms" in ordinary turbulence.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Baggaley, Dr Andrew
Authors: Baggaley, A.W., Barenghi, C.F., Shukurov, A., and Sergeev, Y.A.
College/School:College of Science and Engineering > School of Mathematics and Statistics > Mathematics
Journal Name:Europhysics Letters
Publisher:EDP Sciences
ISSN (Online):1286-4854
Published Online:30 April 2012
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