Dissipation in the superfluid helium film
We have measured the rate of energy dissipation in superfluid helium film flow in an attempt to test a recent theory due to Harris-Lowe, which predicts that for superfluid stream velocitiesvsthat just exceed the critical velocityvc0, the rate of dissipation is given by an equation of the form Q=C(vs−vc0)3/2. Our experiments at 1.33 K show that the exponent, predicted to be 3/2, is 1.491±0.021.
KeywordsHelium Energy Dissipation Magnetic Material Recent Theory Film Flow
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