Motion of vortex ring with tracer particles in superfluid helium
Other Condensed Matter
2009-06-01 v1
Abstract
Recent experiments on quantum turbulence in superfluid helium made use of small tracer particles to track the motion of quantized vortices, determine velocity statistics and visualize vortex reconnections. A problem with this visualization technique is that it may change the turbulent flow which it visualizes. To address this problem, we derive and solve the equations of motion of a quantized vortex ring which contains a given number of particles trapped on the vortex core, hence derive a quantitative criterion to determine in which measure small particles trapped in quantized vortices affect vortex motion. Finally we apply the criterion to a recent experiment.
Cite
@article{arxiv.0905.4797,
title = {Motion of vortex ring with tracer particles in superfluid helium},
author = {C. F. Barenghi and Y. A. Sergeev},
journal= {arXiv preprint arXiv:0905.4797},
year = {2009}
}
Comments
14 pages, 5 figures