Helicity and topology of a small region of quantum vorticity

We numerically study the evolution of a small turbulent region of quantised vorticity in superfluid helium, a regime which can be realised in the laboratory. We show that the turbulence achieves a fluctuating steady-state in terms of dynamics (energy), geometry (length, writhing) and topology (linki...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Fluid dynamics research 2018-02, Vol.50 (1), p.11403
Hauptverfasser: Mesgarnezhad, M, Cooper, R G, Baggaley, A W, Barenghi, C F
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:We numerically study the evolution of a small turbulent region of quantised vorticity in superfluid helium, a regime which can be realised in the laboratory. We show that the turbulence achieves a fluctuating steady-state in terms of dynamics (energy), geometry (length, writhing) and topology (linking). We show that, at any instant, the turbulence consists of many unknots and few large loops of great geometrical and topological complexity.
ISSN:0169-5983
1873-7005
DOI:10.1088/1873-7005/aa694f