Three-dimensional inverse energy transfer induced by vortex reconnections

Baggaley, A.W., Barenghi, C.F. and Sergeev, Y.A. (2014) Three-dimensional inverse energy transfer induced by vortex reconnections. Physical Review E, 89(1), Art. 013002. (doi: 10.1103/PhysRevE.89.013002)

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In low-temperature superfluid helium, viscosity is zero and vorticity takes the form of discrete vortex filaments of fixed circulation and atomic thickness. We present numerical evidence of three-dimensional inverse energy transfer from small length scales to large length scales in superfluid turbulence generated by a flow of vortex rings. We argue that the effect arises from the anisotropy of the flow, which favors vortex reconnections of vortex loops of the same polarity, and that it has been indirectly observed in the laboratory. The effect opens questions about analogies with related processes in ordinary turbulence.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Baggaley, Dr Andrew
Authors: Baggaley, A.W., Barenghi, C.F., and Sergeev, Y.A.
College/School:College of Science and Engineering > School of Mathematics and Statistics > Mathematics
Journal Name:Physical Review E
Publisher:American Physical Society
ISSN (Online):1550-2376

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