Particles-vortex interactions and flow visualization in He4
arXiv:0909.4451 · doi:10.1007/s10909-009-9994-8
Abstract
Recent experiments have demonstrated a remarkable progress in implementing and use of the Particle Image Velocimetry (PIV) and particle tracking techniques for the study of turbulence in He4. However, an interpretation of the experimental data in the superfluid phase requires understanding how the motion of tracer particles is affected by the two components, the viscous normal fluid and the inviscid superfluid. Of a particular importance is the problem of particle interactions with quantized vortex lines which may not only strongly affect the particle motion, but, under certain conditions, may even trap particles on quantized vortex cores. The article reviews recent theoretical, numerical, and experimental results in this rapidly developing area of research, putting critically together recent results, and solving apparent inconsistencies. Also discussed is a closely related technique of detection of quantized vortices negative ion bubbles in He4.
To appear in the J Low Temperature Physics
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Cited by in corpus (17)
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- Excimers He2* as Tracers of Quantum Turbulence in 4He in the T=0 Limit
- Quantum Analogs of Classical Wakes in Bose-Einstein Condensates
- Intermittency of velocity circulation in quantum turbulence
- An exploration of thermal counterflow in He II using particle tracking velocimetry
- Interaction between active particles and quantum vortices leading to Kelvin wave generation
- How trapped particles interact with and sample superfluid vortex excitations
- Characterizing vortex tangle properties in steady-state He II counterflow using particle tracking velocimetry
- Inhomogeneous distribution of particles in co-flow and counterflow quantum turbulence
- Detection of vortex coherent structures in superfluid turbulence
- Eulerian and Lagrangian second-order statistics of superfluid He grid turbulence
- On the determination of vortex ring vorticity using Lagrangian particles
- Backreaction of tracer particles on vortex tangle in helium II counterflow
- Active and finite-size particles in decaying quantum turbulence at low temperature
- Quantum vortex reconnections mediated by trapped particles
- Dynamics of fine particles due to quantized vortices on the surface of superfluid He
- Stokes drift and impurity transport in a quantum fluid