Mutual-friction induced instability of normal-fluid vortex tubes in superfluid helium-4
Kivotides, Demosthenes (2018) Mutual-friction induced instability of normal-fluid vortex tubes in superfluid helium-4. Physics Letters A, 382 (22). pp. 1481-1485. ISSN 0375-9601
|
Text (Kivotides-PLA-2018-Mutual-friction-induced-instability-of-normal-fluid-vortex)
Kivotides_PLA_2018_Mutual_friction_induced_instability_of_normal_fluid_vortex.pdf Accepted Author Manuscript License: ![]() Download (1MB)| Preview |
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.
Creators(s): | Kivotides, Demosthenes; | Item type: | Article |
---|---|
ID code: | 63691 |
Keywords: | turbulence, vortices, computation, Physics, Physics and Astronomy(all) |
Subjects: | Science > Physics |
Department: | Faculty of Engineering > Chemical and Process Engineering |
Depositing user: | Pure Administrator |
Date deposited: | 11 Apr 2018 15:13 |
Last modified: | 01 Jan 2021 12:32 |
Related URLs: | |
URI: | https://strathprints.strath.ac.uk/id/eprint/63691 |
Export data: |