6533b7d1fe1ef96bd125c492
RESEARCH PRODUCT
Hydrodynamic equations of anisotropic, polarized and inhomogeneous superfluid vortex tangles
Maria Stella MongiovìMichele SciaccaDavid Jousubject
PhysicsTurbulenceCondensed Matter::OtherFOS: Physical sciencesStatistical and Nonlinear PhysicsTourbillonCondensed Matter PhysicsPolarization (waves)VortexCylinder (engine)law.inventionSuperfluidityPhysics::Fluid DynamicsCondensed Matter - Other Condensed MatterClassical mechanicslawEvolution equationAnisotropySettore MAT/07 - Fisica MatematicaSuperfluid turbulence Liquid helium II Hydrodynamic equationsOther Condensed Matter (cond-mat.other)description
We include the effects of anisotropy and polarization in the hydrodynamics of inhomogeneous vortex tangles, thus generalizing the well known Hall-Vinen-Bekarevich-Khalatnikov equations, which do not take them in consideration. These effects contribute to the mutual friction force ${\bf F}_{ns}$ between normal and superfluid components and to the vortex tension force $\rho_s{\bf T}$. These equations are complemented by an evolution equation for the vortex line density $L$, which takes into account these contributions. These equations are expected to be more suitable than the usual ones for rotating counterflows, or turbulence behind a cylinder, or turbulence produced by a grid of parallel thin cylinders towed across a superfluid, because in these situations polarization is expected to play a relevant role.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2008-06-11 |