Scattering of Line-Ring Vortices in a Superfluid
arXiv:1410.4165 · doi:10.1007/s10909-015-1293-y
Abstract
We study the scattering of vortex rings by a superfluid line vortex using the Gross-Pitaevskii equation in a parameter regime where a hydrodynamic description based on a vortex filament approximation is applicable. By using a vortex extraction algorithm, we are able to track the location of the vortex ring as a function of time. Using this, we show that the scattering of the vortex ring in our Gross-Pitaevskii simulations is well captured by the local induction approximation of a vortex filament model for a wide range of impact parameters. The scattering of a vortex ring by a line vortex is characterised by the initial offset of the centre of the ring from the axis of the vortex. We find that a strong asymmetry exists in the scattering of a ring as a function of this initial scattering parameter.
12 pages, 7 figures
References in corpus (5)
- Bottleneck crossover between classical and quantum superfluid turbulence
- Quantum and quasiclassical types of superfluid turbulence
- Reconnection of superfluid vortex bundles
- Scattering and leapfrogging of vortex rings in a superfluid
- A note on the propagation of quantized vortex rings through a quantum turbulence tangle: Energy transport or energy dissipation?