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Motion of quantum vortex lines near realistic rough boundaries

Lookup NU author(s): Dr George Stagg, Professor Nick ParkerORCiD, Professor Carlo Barenghi


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© TU Delft. We numerically solve the three–dimensional, time–dependent Gross–Pitaevskii equation to model a superfluid flowing over a realistic rough boundary. Our model for the boundary is based on the atom–force microscope image of a NbTi vibrating wire used to generate turbulence in actual experiments. We find that near the boundary a dense region of quantum vortices is created, which forms a kind of ‘superfluid boundary layer’.

Publication metadata

Author(s): Stagg GW, Parker NG, Barenghi CF

Publication type: Conference Proceedings (inc. Abstract)

Publication status: Published

Conference Name: Proceedings of the 15th European Turbulence Conference (ETC 2015)

Year of Conference: 2015

Online publication date: 26/08/2015

Acceptance date: 01/01/1900

Publisher: TU Delft