Transition from Ekman flow to Taylor vortex flow in superfluid helium

Details Transition from Ekman flow to Taylor vortex flow in superfluid helium Transition from Ekman flow to Taylor vortex flow in superfluid helium

2003-06-23

arxiv.org/abs/cond-mat/0306566v1

Physics

Condensed Matter

12 pages, 8 figures; submitted

Scientific paper

10.1017/S0022112004009206

By numerically computing the steady axisymmetric flow of helium II confined inside a finite aspect ratio Couette annulus, we determine the transition from Ekman flow to Taylor vortex flow as a function of temperature and aspect ratio.We find that the low-Reynolds number flow is quite different to that of a classical fluid, particularly at lower temperatures.At high aspect ratio our results confirm the existing linear stability theory of the onset of Taylor vortices, which assumes infinitely long cylinders.

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