Vortex Line Density in Plane Couette Flow in Superfluid Helium

Autori

  • Michele Sciacca Università di Palermo
  • Maria Stella Mongiovi' Università di Palermo
  • David Jou Universitat Autonoma de Barcelona

DOI:

https://doi.org/10.1685/

Parole chiave:

quantum vortices, coflow and counterflow

Abstract

Recent interest in cryogenic applications has enhanced studies in coflow superfluid turbulence, which is characterized by two fluids, normal and superfluid, moving in the same direction. In our studies we are interested to deal with superfluid turbulence in plane Couette flow, as an illustration of this interesting phenomena. An equation previously proposed to describe the evolution of vortex line density in rotating counterflow turbulent tangles in $^4$He is generalized to incorporate nonvanishing barycentric velocity and velocity gradients. Incorporating our generalized equation into a thermodynamical model previously proposed, we evaluate the vortex density in plane Couette flow. [DOI: 10.1685/CSC09290] About DOI

Dowloads

Pubblicato

2009-08-12

Fascicolo

V. 3 (2009)

Sezione

Articles

Licenza

Authors who submit to this journal agree to the following terms: a) Authors retain copyright over their work, while allowing the SIMAI to place this accepted work under a Creative Commons Attribution License (CC license), which allows others to freely access, use, and share the work, with an acknowledgement of the work's authorship. b) Authors are able to waive the terms of the CC license and enter into separate, additional contractual arrangements for the non-exclusive distribution and subsequent publication of this work (e.g., publish a revised version in a journal, post it to an institutional repository or publish it in a book). with an acknowledgement of its initial publication on “Communications to SIMAI Congress”. c) In addition, authors are encouraged to post and share their work online (e.g., in institutional repositories or on their website).