The stability of a superfluid rotating jet

Henderson, K. and Barenghi, C. (2002) The stability of a superfluid rotating jet. Journal of Physics A: Mathematical and General, 35. pp. 9645-9655. ISSN 0305-4470

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Publisher's URL: http://dx.doi.org/10.1088/0305-4470/35/45/311

Abstract

We consider the linear stability of a cylindrical rotating jet of pure superfluid held together by surface tension. A necessary and sufficient condition for stability to axisymmetric disturbances is derived which corresponds to that of a classical inviscid fluid. For axisymmetric disturbances we find that the vortex tension does not affect the range of unstable axial wave numbers, only the temporal growth rate and the most critical wave number. A sufficient condition for the stability of a general disturbance is derived which corresponds to that of a classical inviscid fluid. We find for non-axisymmetric disturbances, that the vortex tension increases the range of unstable wave numbers. The temporal growth rates of the unstable azimuthal modes increase with vortex tension.

Item Type:Article
Uncontrolled Keywords:stability, rotating jet
Faculty/Department:Faculty of Environment and Technology
ID Code:5855
Deposited By: R. Upload account
Deposited On:22 Jan 2010 15:10
Last Modified:17 Feb 2015 11:07

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