6533b85dfe1ef96bd12be77d

RESEARCH PRODUCT

Non-equilibrium thermodynamics analysis of rotating counterflow superfluid turbulence

Michele Sciacca

subject

PhysicsFriction forceTurbulenceCondensed Matter::OtherNon-equilibrium thermodynamicsFOS: Physical sciencessuperfluid turbulence Onsager-Casimir reciprocity relation rotating counterflow turbulenceVortexComputer Science ApplicationsSuperfluidityCondensed Matter - Other Condensed MatterFormalism (philosophy of mathematics)Classical mechanicsModeling and SimulationModelling and SimulationEvolution equationAnisotropySettore MAT/07 - Fisica MatematicaOther Condensed Matter (cond-mat.other)

description

In two previous papers two evolution equations for the vortex line density $L$, proposed by Vinen, were generalized to rotating superfluid turbulence and compared with each other. Here, the already generalized alternative Vinen equation is extended to the case in which counterflow and rotation are not collinear. Then, the obtained equation is considered from the viewpoint of non-equilibrium thermodynamics. According with this formalism, the compatibility between this evolution equation for $L$ and that one for the velocity of the superfluid component is studied. The compatibility condition requires the presence of a new term dependent on the anisotropy of the tangle, which indicates how the friction force depends on the rotation rate.

yearjournalcountryeditionlanguage
2010-08-25
http://arxiv.org/abs/1008.4390