Super Stability of Laminar Vortex Flow in Superfluid 3He-B

Abstract

Vortex flow remains laminar up to large Reynolds numbers (Re~1000) in a cylinder filled with 3He-B. This is inferred from NMR measurements and numerical vortex filament calculations where we study the spin up and spin down responses of the superfluid component, after a sudden change in rotation velocity. In normal fluids and in superfluid 4He these responses are turbulent. In 3He-B the vortex core radius is much larger which reduces both surface pinning and vortex reconnections, the phenomena, which enhance vortex bending and the creation of turbulent tangles. Thus the origin for the greater stability of vortex flow in 3He-B is a quantum phenomenon. Only large flow perturbations are found to make the responses turbulent, such as the walls of a cubic container or the presence of invasive measuring probes inside the container.

4 pages, 6 figures

References in corpus (6)

• Scaling of the turbulence transition threshold in a pipe
• Transition to superfluid turbulence governed by an intrinsic parameter
• Dissipation of Quantum Turbulence in the Zero Temperature Limit
• Superfluid neutron star turbulence
• Quantum turbulence in propagating superfluid vortex front
• Rotating inclined cylinder and the effect of the tilt angle on vortices

Cited by in corpus (20)

• Neutron Stars in the Laboratory
• Vortex filament method as a tool for computational visualization of quantum turbulence
• Tree method for quantum vortex dynamics
• Rotating quantum turbulence in the unitary Fermi gas
• Thermal counterflow in a periodic channel with solid boundaries
• Superfluid vortex front at T -> 0: Decoupling from the reference frame
• Dissipation enhancement from a single vortex reconnection in superfluid helium
• Energy and angular momentum balance in wall-bounded superfluid turbulence
• Vortex core contribution to textural energy in 3He-B below 0.4Tc
• Quantum turbulence in superfluids with wall-clamped normal component
• Mutual friction in superfluid ${}^3$He-B in the low-temperature regime
• Quasiparticle scattering measurements of laminar and turbulent vortex flow in the spin-down of superfluid 3He-B
• Turbulent Vortex Flow Responses at the AB Interface in Rotating Superfluid 3He-B
• Textures of Superfluid 3He-B in Applied Flow and Comparison with Hydrostatic Theory
• Interpreting superfluid spin up through the response of the container
• Equilibrium rotation of a vortex bundle terminating on a lateral wall
• Andreev reflection in rotating superfluid ${}^3$He-B
• Thermal Detection of Turbulent and Laminar Dissipation in Vortex Front Motion
• Asymptotic motion of a single vortex in a rotating cylinder
• Dynamics of twisted vortex bundles and laminar propagation of the vortex front