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HRT

Seminar

Reconnection of superfluid vortex bundles

Barenghi, CF (Newcastle)
Friday 03 October 2008, 16:00-16:30

Seminar Room 1, Newton Institute

Abstract

Using the vortex filament model and the Gross Pitaevskii nonlinear Schroedinger equation, we show that bundles of quantised vortex lines in helium~II are structurally robust and can reconnect with each other maintaining their identity. We discuss vortex stretching in superfluid turbulence and show that, during the bundle reconnection process, a large amount of Kelvin waves is generated, in agreement with the finding that helicity is produced by nearly singular vortex interactions in classical Euler flows.

Presentation

[ppt ] [zip ]

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