Triple vortex ring structure in superfluid helium II
Triple vortex ring structure in superfluid helium II
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DOI：
10.1126/science.290.5492.777
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发表时间：
2000-10-27
期刊：
影响因子：
56.9
通讯作者：
Samuels, DC
中科院分区：
文献类型：
--
作者：
Kivotides, D;Barenghi, CF;Samuels, DC
像氦II这样的超流体由两种相互渗透的流体组成：正常流体和超流体。氦II涡环通常被认为只是一个超流体物体，忽略了正常流体的任何相关运动。我们报告了一个三维计算的正常流体和超流组件的耦合运动，这表明，氦II涡环由一个超流涡环伴随着两个同轴的正常流体涡环的极性相反。三个涡环形成一个连贯的耗散结构。
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.