Skip to Main content Skip to Navigation
Journal articles

Experimental Signature of Quantum Turbulence in Velocity Spectra?

Abstract : Velocity measurements in turbulent superfluid helium between co-rotating propellers are reported. The parameters are chosen such that the flow is fully turbulent, and its dissipative scales are partly resolved by the velocity sensors. This allows for the first experimental comparison of spectra in quantum versus classical turbulence where dissipative scales are resolved. In some specific conditions, differences are observed, with an excess of energy at small scales in the quantum case compared to the classical one. This difference is consistent with the prediction of a pileup of superfluid kinetic energy at the bottom of the inertial cascade of turbulence due to a specific dissipation mechanism.
Document type :
Journal articles
Complete list of metadata

https://hal.archives-ouvertes.fr/hal-03132496
Contributor : Julien Salort Connect in order to contact the contributor
Submitted on : Friday, June 11, 2021 - 12:15:03 PM
Last modification on : Friday, October 22, 2021 - 9:26:07 AM

File

njp_23_6_063005.pdf
Publisher files allowed on an open archive

Identifiers

Citation

Julien Salort, Francesca Chillà, Éléonore Rusaouën, Philippe-E. Roche, Mathieu Gibert, et al.. Experimental Signature of Quantum Turbulence in Velocity Spectra?. New Journal of Physics, Institute of Physics: Open Access Journals, 2021, 23, pp.063005. ⟨10.1088/1367-2630/abfe1f⟩. ⟨hal-03132496v3⟩

Share

Metrics

Record views

92

Files downloads

80