Details

Autor(en) / Beteiligte

• Salort, J.
• Baudet, C.
• Castaing, B.
• Chabaud, B.
• Daviaud, F.
• Didelot, T.
• Diribarne, P.
• Dubrulle, B.
• Gagne, Y.
• Gauthier, F.
• Girard, A.
• Hébral, B.
• Rousset, B.
• Thibault, P.
• Roche, P.-E.

Titel

Turbulent velocity spectra in superfluid flows

Ist Teil von

• Physics of fluids (1994), 2010-12, Vol.22 (12), p.125102-125102-9

Ort / Verlag

Melville, NY: American Institute of Physics

Erscheinungsjahr

2010

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• We present velocity spectra measured in three cryogenic liquid H 4 e 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.