Baggaley Andrew W, Barenghi Carlo F, Sergeev Yuri A
School of Mathematics and Statistics, University of Glasgow, Glasgow, G12 8QW, United Kingdom.
Joint Quantum Centre Durham-Newcastle and School of Mathematics and Statistics, Newcastle University, Newcastle upon Tyne, NE1 7RU, United Kingdom.
Phys Rev E Stat Nonlin Soft Matter Phys. 2014 Jan;89(1):013002. doi: 10.1103/PhysRevE.89.013002. Epub 2014 Jan 6.
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.
