Kolmogorov Turbulence in Low-Temperature Superflows

Journal Article · Thu May 01 04:00:00 EDT 1997 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.78.3896· OSTI ID:544295

Nore, C; Brachet, M E ^[1]; Abid, M ^[2]

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1. Laboratoire de Physique Statistique de l`Ecole Normale Superieure, associe au CNRS et aux Universites Paris 6 et 7, 24 Rue Lhomond, 75231 Paris Cedex 05 (France)
2. Institut de Recherche sur les Phenomenes Hors Equilibre, UMR CNRS et Universite d`Aix-Marseille I, service 252, Centre St-Jerome, 13397 Marseille Cedex 20 (France)

Low-temperature decaying superfluid turbulence is studied using the nonlinear Schroedinger equation in the geometry of the Taylor-Green (TG) vortex flow with resolutions up to 512{sup 3}. The rate of (irreversible) kinetic energy transfer in the superfluid TG vortex is found to be comparable to that of the viscous TG vortex. At the moment of maximum dissipation, the energy spectrum of the superflow has an inertial range compatible with Kolmogorov`s scaling. Physical-space visualizations show that the vorticity dynamics of the superflow is similar to that of the viscous flow, including vortex reconnection. The implications to experiments in low-temperature helium are discussed. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 544295
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 20 Vol. 78; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
DISSIPATION FACTOR
ENERGY TRANSFER
FLOW VISUALIZATION
FOKKER-PLANCK EQUATION
GINZBURG-LANDAU THEORY
SCALING LAWS
SCHROEDINGER EQUATION
SUPERFLUIDITY
TURBULENT FLOW
VORTICES