Probing quantum and classical turbulence analogy in von Kármán liquid helium, nitrogen, and water experiments

We report measurements of the dissipation in the Superfluid helium high REynold number von Kármán flow experiment for different forcing conditions. Statistically steady flows are reached; they display a hysteretic behavior similar to what has been observed in a 1:4 scale water experiment. Our macros...

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Bibliographic Details
Published in:Physics of fluids (1994) 2014-12, Vol.26 (12)
Main Authors: Saint-Michel, B., Herbert, E., Salort, J., Baudet, C., Bon Mardion, M., Bonnay, P., Bourgoin, M., Castaing, B., Chevillard, L., Daviaud, F., Diribarne, P., Dubrulle, B., Gagne, Y., Gibert, M., Girard, A., Hébral, B., Lehner, Th, Rousset, B.
Format: Article
Language:English
Subjects:
Astrophysics
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
CLASSICAL MECHANICS
ENGINEERING
Flow stability
Fluid Dynamics
Fluid flow
Fluids
HELIUM
HYSTERESIS
Liquid helium
NITROGEN
Physics
QUANTUM MECHANICS
REYNOLDS NUMBER
SCALING LAWS
STABILITY
STEADY FLOW
STEADY-STATE CONDITIONS
SUPERFLUIDITY
TURBULENCE
Turbulent flow
WATER
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Summary:We report measurements of the dissipation in the Superfluid helium high REynold number von Kármán flow experiment for different forcing conditions. Statistically steady flows are reached; they display a hysteretic behavior similar to what has been observed in a 1:4 scale water experiment. Our macroscopical measurements indicate no noticeable difference between classical and superfluid flows, thereby providing evidence of the same dissipation scaling laws in the two phases. A detailed study of the evolution of the hysteresis cycle with the Reynolds number supports the idea that the stability of the steady states of classical turbulence in this closed flow is partly governed by the dissipative scales. It also supports the idea that the normal and the superfluid components at these temperatures (1.6 K) are locked down to the dissipative length scale.
ISSN:1070-6631
1089-7666
DOI:10.1063/1.4904378