Journal article

Conditions for the existence of a counterflow in superfluid helium

We show that in He II a counterflow without any local center-of-mass motion cannot be maintained, except for special symmetries of the flow field (e.g., plane axial or spherical symmetry) and for second-sound waves with small amplitudes. Our considerations are based on assuming const. values of the d. and of the ratio of entropy to normal mass. Hence convection by center-of-mass velocities has to be taken into account for general three-dimensional and in particular for turbulent motions even if the total or the av. local momentum vanishes. [on SciFinder (R)]


    • LCPPM-ARTICLE-1990-002

    Record created on 2006-02-27, modified on 2016-08-08


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