129 citations · 385 across the 11 of their papers we have counts for
12 papers
On the investigation of properties of superfluid He turbulence using a hot-wire signal
P. Diribarne, M. Bon-Mardion, A. Girard +17
We report hot-wire measurements performed in two very different, co- and counter-rotating flows, in normal and superfluid helium at 1.6 K, 2 K, and 2.3 K. As recently reported, the…
Pair dispersion in inhomogeneous turbulent thermal convection
Olivier Liot, David-Martin-Calle, Amélie Gay +3
Due to large scale flow inhomogeneities and the effects of temperature, turbulence small-scale structure in thermal convection is still an active field of investigation, especially…
Structure, dynamics and reconnection of vortices in a nonlocal model of superfluids
Jason Reneuve, Julien Salort, Laurent Chevillard
We study the reconnection of vortices in a quantum fluid with a roton minimum, by numerically solving the Gross-Pitaevskii (GP) equations. A non-local interaction potential is intr…
Thermal boundary layers in turbulent Rayleigh-Bénard convection with rough surfaces
Ronald du Puits, Alice Loesch, Julien Salort +1
We present highly resolved measurements of the near-wall temperature field in thermally driven convection at a rough surface. Our measurements have been undertaken in a very large…
Intermittency of quantum turbulence with superfluid fractions from 0% to 96%
Eléonore Rusaouen, Benoît Chabaud, Julien Salort +1
The intermittency of turbulent superfluid helium is explored systematically in a steady wake flow from 1.28 K up to T>2.18K using a local anemometer. This temperature range spans r…
Velocity fluctuations and boundary layer structure in a rough Rayleigh-B{é}nard cell filled with water
Olivier Liot, Quentin Ehlinger, Elonore Rusaouën +3
We report Particle Image Velocimetry of the Large Scale Circulation and the viscous boundary layer in turbulent thermal convection. We use two parallelepipedic Rayleigh-B{é}nard ce…
Simultaneous temperature and velocity Lagrangian measurements in turbulent thermal convection
O. Liot, F. Seychelles, F. Zonta +6
We report joint Lagrangian velocity and temperature measurements in turbulent thermal convection. Measurements are performed using an improved version (extended autonomy) of the ne…
Probing quantum and classical turbulence analogy through global bifurcations in a von Kármán liquid Helium experiment
B Saint-Michel, E Herbert, J Salort +15
We report measurements of the dissipation in the Superfluid Helium high REynold number von Karman flow (SHREK) experiment for different forcing conditions, through a regime of glob…
On the triggering of the Ultimate Regime of convection
Philippe-E. Roche, Frédéric Gauthier, Robert Kaiser +1
Rayleigh-Bénard cells are one of the simplest systems to explore the laws of natural convection in the highly turbulent limit. However, at very high Rayleigh numbers (Ra > 1E12) an…
Turbulent velocity spectra in superfluid flows
J. Salort, C. Baudet, B. Castaing +12
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 a…
Mesoscale Equipartition of kinetic energy in Quantum Turbulence
Julien Salort, Philippe-E. Roche, Emmanuel Lévêque
The turbulence of superfluid helium is investigated numerically at finite temperature. Direct numerical simulations are performed with a "truncated HVBK" model, which combines the…
Temperature fluctuations in the Ultimate Regime of Convection
Frédéric Gauthier, Julien Salort, Olivier Bourgeois +4
A new regime of turbulent convection has been reported nearly one decade ago, based on global heat transfer measurements at very high Rayleigh numbers. We examine the signature of…