Flow of He II due to an Oscillating Grid in the Low Temperature Limit

Abstract

The macroscopic flow properties of pure He II are probed in the limit of zero temperature using an oscillating grid. With increasing oscillation amplitude the initially pure superflow changes abruptly: the resonant frequency decreases and the response becomes strongly nonlinear, attributable to the growth of a boundary layer of quantized vortices that increases the effective mass of the grid. On further increase of oscillation amplitude, the flow undergoes a transition to turbulence.

4 pages, 3 figures; added 1 figure and 2 references, revised, rewrote conclusions

References in corpus (2)

• Evaporation of a packet of quantized vorticity
• Fluctuative Mechanism of Vortex Nucleation in the Flow of ${}^{4}He$

Cited by in corpus (14)

• Quartz Tuning Fork: Thermometer, Pressure- and Viscometer for Helium Liquids
• Quantum hydrodynamics
• The Generation of Turbulence by Oscillating Structures in Superfluid Helium at Very Low Temperatures
• Turbulence in Boundary Flow of Superfluid ${}^4$He Triggered by Free Vortex Rings
• Quantum Turbulence
• Turbulent dynamics in rotating helium superfluids
• Boundary layers and emitted excitations in nonlinear Schrodinger superflow past a disk
• Universal Critical Velocity for the Onset of Turbulence of Oscillatory Superfluid Flow
• Drag force on an oscillating object in quantum turbulence
• Energy and angular momentum balance in wall-bounded superfluid turbulence
• Universal onset of quantum turbulence in oscillating flows and crossover to steady flows
• Damping of a micro-electromechanical oscillator in turbulent superfluid ${}^4$He: A novel probe of quantized vorticity in the ultra-low temperature regime
• Visualization of quantum turbulence in superfluid ${}^3$He-B: Combined numerical/experimental study of Andreev reflection
• On the Transition to Turbulence of Oscillatory Flow of Liquid Helium-4