Abstract
It is shown that, as a result of its interactions with superfluid vorticity, a normal-fluid vortex tube in helium-4 becomes unstable and disintegrates. The superfluid vorticity acquires only a small (few percents of normal-fluid tube strength) polarization, whilst expanding in a front-like manner in the intervortex space of the normal-fluid, forming a dense, unstructured tangle in the process. The accompanied energy spectra scalings offer a structural explanation of analogous scalings in fully developed finite-temperature superfluid turbulence. A macroscopic mutual-friction model incorporating these findings is proposed.
Original language | English |
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Pages (from-to) | 1481-1485 |
Number of pages | 5 |
Journal | Physics Letters A |
Volume | 382 |
Issue number | 22 |
Early online date | 4 Apr 2018 |
DOIs | |
Publication status | Published - 5 Jun 2018 |
Keywords
- turbulence
- vortices
- computation