Longitudinal counterflow in turbulent liquid helium: Velocity profile of the normal component

L. Saluto, M. S. Mongiovì, D. Jou

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Resum

In this paper, the velocity profile of the normal component in the stationary flow of turbulent superfluid helium inside a cylindrical channel is determined, making use of a one-fluid model with internal variables derived from Extended Thermodynamics. In the hypothesis of null barycentric velocity of the fluid (the so-called counterflow situation), it is seen that in the presence of a sufficiently high vortex length density the velocity profile of the normal component becomes very flat in the central region of the channel. Thus, a central flat profile of the normal fluid does not necessarily imply that the flow of the normal component is turbulent. © 2013 Springer Basel.
Idioma originalEnglish
Pàgines (de-a)531-548
RevistaZeitschrift fur Angewandte Mathematik und Physik
Volum65
DOIs
Estat de la publicacióPublicada - 1 de gen. 2014

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