Physics – Condensed Matter – Other Condensed Matter
Scientific paper
2007-11-05
Physica B (2008)
Physics
Condensed Matter
Other Condensed Matter
16 pages, 6 figures. Submitted for publication
Scientific paper
10.1016/j.physb.2007.12.001
Two alternative Vinen's evolution equations for the vortex line density L in counterflow superfluid turbulence, are physically admissible and lead to analogous results in steady states. In Phys. Rev. B, 69, 094513 (2004) the most used of them was generalized to counterflow superfluid turbulence in rotating containers. Here, the analogous generalization for the alternative Vinen's equation is proposed. Both generalized Vinen's equations are compared with the experimental results, not only in steady-states but also in some unsteady situations. From this analysis follows that the solutions of the alternative Vinen's equation tend significantly faster to the corresponding final steady state values than the solutions of the usual Vinen's equation, and that the latter seems more suitable for the description of the experimental available data.
Jou David
Mongiovì Maria Stella
Sciacca Michele
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