Measurement of the normal-fluid velocity in superfluids.
Numerical calculations of (finite temperature) superfluid vortex ring propagation against a particulate sheet show that the solid particle trajectories collapse to a very good approximation to the normal-fluid path lines. We propose an experiment in which, by measuring the solid particles' velocities, direct information about the instantaneous normal-fluid velocity values could be obtained.
Kivotides
Demosthenes
D
School of Mathematics, University of Newcastle, Newcastle upon Tyne, NE1 7RU, United Kingdom.
Barenghi
Carlo F
CF
Sergeev
Yuri A
YA