6533b870fe1ef96bd12d072f

RESEARCH PRODUCT

Alternative Vinen equation and its extension to rotating counterflow superfluid turbulence

Michele SciaccaDavid JouMaria Stella Mongiovì

subject

PhysicsCondensed Matter::OtherTurbulenceGeneralizationFOS: Physical sciencesTourbillonCondensed Matter PhysicsRotationSuperfluid turbulenceElectronic Optical and Magnetic MaterialsVortexCondensed Matter - Other Condensed MatterSuperfluidityVortex tangleClassical mechanicsRotating counterflow turbulenceLine (geometry)Electrical and Electronic EngineeringSettore MAT/07 - Fisica MatematicaSuperfluid helium-4Other Condensed Matter (cond-mat.other)

description

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.

yearjournalcountryeditionlanguage
2007-11-05Physica B: Condensed Matter
https://doi.org/10.1016/j.physb.2007.12.001