Large-scale superfluid vortex rings at nonzero temperatures

Article

关键词: HE-II;    QUANTUM FLUID;    TURBULENCE;    CIRCULATION;    HELIUM;    VISUALIZATION;    DYNAMICS;    FRICTION;   

DOI  :  10.1103/PhysRevB.90.224514

来源: SCIE

【 摘 要 】

We numerically model experiments in which large-scale vortex rings-bundles of quantized vortex loops-are created in superfluid helium by a piston-cylinder arrangement. We show that the presence of a normal-fluid vortex ring together with the quantized vortices is essential to explain the coherence of these large-scale vortex structures at nonzero temperatures, as observed experimentally. Finally we argue that the interaction of superfluid and normal-fluid vortex bundles is relevant to recent investigations of superfluid turbulence.

【 授权许可】

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