Turbulent velocity spectra in superfluid flows

Abstract : We present velocity spectra measured in three cryogenic liquid 4He steady flows: grid and wake flows in a pressurized wind tunnel capable of achieving mean velocities up to 5 m/s at temperatures above and below the superfluid transition, down to 1.7 K, and a "chunk" turbulence flow at 1.55 K, capable of sustaining mean superfluid velocities up to 1.3 m/s. Depending on the flows, the stagnation pressure probes used for anemometry are resolving from one to two decades of the inertial regime of the turbulent cascade. We do not find any evidence that the second order statistics of turbulence below the superfluid transition differ from the ones of classical turbulence, above the transition.
Liste complète des métadonnées

Littérature citée [34 références]  Voir  Masquer  Télécharger

Contributeur : Philippe-Emmanuel Roche <>
Soumis le : vendredi 17 décembre 2010 - 20:55:16
Dernière modification le : jeudi 18 octobre 2018 - 12:18:05
Document(s) archivé(s) le : vendredi 18 mars 2011 - 03:32:09


Accord explicite pour ce dépôt



Julien Salort, Christophe Baudet, Bernard Castaing, Benoît Chabaud, François Daviaud, et al.. Turbulent velocity spectra in superfluid flows. Physics of Fluids, American Institute of Physics, 2010, 22, pp.125102. 〈10.1063/1.3504375〉. 〈hal-00508872v2〉



Consultations de la notice


Téléchargements de fichiers