Large-scale normal fluid circulation in helium superflows

Article

关键词: MUTUAL FRICTION;    QUANTIZED VORTICES;    QUANTUM TURBULENCE;    PURE SUPERFLOW;    HEAT CURRENT;    COUNTERFLOW;    FLOW;    DYNAMICS;    TRANSITION;    EQUATION;   

DOI  :  10.1103/PhysRevB.95.014509

来源: SCIE

【 摘 要 】

We perform fully coupled numerical simulations of helium II pure superflows in a channel, with vortex-line density typical of experiments. Peculiar to our model is the computation of the back-reaction of the superfluid vortex motion on the normal fluid and the presence of solid boundaries. We recover the uniform vortex-line density experimentally measured employing second sound resonators and we show that pure superflow in helium II is associated with a large-scale circulation of the normal fluid which can be detected using existing particle-tracking visualization techniques.

【 授权许可】

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