Vortex Reconnection as the Dissipative Scattering of Dipoles

Details Vortex Reconnection as the Dissipative Scattering of Dipoles Vortex Reconnection as the Dissipative Scattering of Dipoles

1999-08-27

arxiv.org/abs/cond-mat/9908409v1

Phys. Rev. E 61, 2640 (2000).

Physics

Condensed Matter

Soft Condensed Matter

8 pages, 3 postscript figures

Scientific paper

10.1103/PhysRevE.61.2640

We propose a phenomenological model of vortex tube reconnection at high Reynolds numbers. The basic picture is that squeezed vortex lines, formed by stretching in the region of closest approach between filaments, interact like dipoles (monopole-antimonopole pairs) of a confining electrostatic theory. The probability of dipole creation is found from a canonical ensemble spanned by foldings of the vortex tubes, with temperature parameter estimated from the typical energy variation taking place in the reconnection process. Vortex line reshuffling by viscous diffusion is described in terms of directional transitions of the dipoles. The model is used to fit with reasonable accuracy experimental data established long ago on the symmetric collision of vortex rings. We also study along similar lines the asymmetric case, related to the reconnection of non-parallel vortex tubes.

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