Vortex locking in direct numerical simulations of quantum turbulence.
Direct numerical simulations are used to examine the locking of quantized superfluid vortices and normal fluid vorticity in evolving turbulent flows. The superfluid is driven by the normal fluid, which undergoes either a decaying Taylor-Green flow or a linearly forced homogeneous isotropic turbulent flow, although the back reaction of the superfluid on the normal fluid flow is omitted. Using correlation functions and wavelet transforms, we present numerical and visual evidence for vortex locking on length scales above the intervortex spacing.
Morris
Karla
K
Department of Mechanical Engineering, City College of the City University of New York, New York, New York 10031, USA.
Koplik
Joel
J
Rouson
Damian W I
DW