Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 777-779 |
| Number of pages | 3 |
| Journal | Science |
| Volume | 290 |
| Issue number | 5492 |
| DOIs | |
| Publication status | Published - 27 Oct 2000 |
Keywords
- helium
- article
- cell polarity
- flow kinetics
- flow measurement
- mathematical computing
- priority journal
- structure analysis
- surface property
- three dimensional imaging
- turbulent flow