129 citations · 415 across the 8 of their papers we have counts for
8 papers
Disentangling temperature and Reynolds number effects in quantum turbulence
Juan Ignacio Polanco, Philippe-E. Roche, Luminita Danaila +1
The interplay between viscous and frictional dissipation is key to understanding quantum turbulence dynamics in superfluid He. Based on a coarse-grained two-fluid description,…
Energy cascade and the four-fifths law in superfluid turbulence
Julien Salort, Benoît Chabaud, Emmanuel Lévêque +1
The 4/5-law of turbulence, which characterizes the energy cascade from large to small-sized eddies at high Reynolds numbers in classical fluids, is verified experimentally in a sup…
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…
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…
Evidence of a boundary layer instability at very high Rayleigh number
Frédéric Gauthier, Philippe-Emmanuel P. -E. Roche
In 1997, a Rayleigh-Bénard experiment evidenced a significant increase of the heat transport efficiency for Rayleigh numbers larger than and interpreted this obse…
Vortex spectrum in superfluid turbulence: interpretation of a recent experiment
Philippe-Emmanuel P. -E. Roche, Carlo F. Barenghi
We discuss a recent experiment in which the spectrum of the vortex line density fluctuations has been measured in superfluid turbulence. The observed frequency dependence of the sp…