Kolmogorov Turbulence in Low-Temperature Superflows
- 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)
- 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, Vol. 78, Issue 20; Other Information: PBD: May 1997
- Country of Publication:
- United States
- Language:
- English
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