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Lookup NU author(s): Dr Demosthenes Kivotides,
Professor Carlo Barenghi,
Dr David Samuels
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Superfluids such as helium II consist of two interpenetrating fluids: the normal fluid and the superfluid. The helium II vortex ring has generally been considered merely as a superfluid object, neglecting any associated motion of the normal fluid. We report a three-dimensional calculation of the coupled motion of the normal-fluid and superfluid components, which shows that the helium II vortex ring consists of a superfluid vortex ring accompanied by two coaxial normal-fluid vortex rings of opposite polarity. The three vortex rings form a coherent, dissipative structure.
Author(s): Kivotides D, Barenghi CF, Samuels DC
Publication type: Article
Publication status: Published
ISSN (print): 0036-8075
ISSN (electronic): 1095-9203
Publisher: American Association for the Advancement of Science
PubMed id: 11052935
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