Intrinsic and extrinsic vortex nucleation mechanisms in the flow
Condensed Matter
2015-06-25 v1
Abstract
We propose very general vortex nucleation mechanisms analogous to a hydrodynamic instability and calculate associated critical velocity in agreement with experiments. The creation of vortices via extrinsic mechanism is driven by a formation of the surface vorticity sheet created by the flow, which reaches a critical size. Such a sheet screens an attraction of a half-vortex ring to the wall, the barrier for the vortex nucleation disappears and the vortex nucleation is started. In the intrinsic mechanism the creation of a big vortex ring, which transforms into the vortex, is driven by a fluctuative generation of small vortex rings
Keywords
Cite
@article{arxiv.cond-mat/9605201,
title = {Intrinsic and extrinsic vortex nucleation mechanisms in the flow},
author = {F. V. Kusmartsev},
journal= {arXiv preprint arXiv:cond-mat/9605201},
year = {2015}
}
Comments
Contribution paper to LT21 (to be published in Physica B)