6533b853fe1ef96bd12ac0fb

RESEARCH PRODUCT

Vortex diffusion and vortex-line hysteresis in radial quantum turbulence

Maria Stella MongiovìLidia SalutoDavid Jou

subject

PhysicsCondensed matter physicsTurbulenceHysteresisVortex diffusionQuantum turbulenceStarting vortexCondensed Matter PhysicsQuantum turbulenceElectronic Optical and Magnetic MaterialsVortexVortex ringCondensed Matter::SuperconductivityVortex stretchingHorseshoe vortexQuantized vorticeBurgers vortexElectrical and Electronic EngineeringSettore MAT/07 - Fisica Matematica

description

Abstract We study the influence of vortex diffusion on the evolution of inhomogeneous quantized vortex tangles. A simple hydrodynamical model to describe inhomogeneous counterflow superfluid turbulence is used. As an illustration, we obtain solutions for these effects in radial counterflow of helium II between two concentric cylinders at different temperatures. The vortex diffusion from the inner hotter cylinder to the outer colder cylinder increases the vortex length density everywhere as compared with the non-diffusive situation. The possibility of hysteresis in the vortex line density under cyclical variations of the heat flow is explored.

yearjournalcountryeditionlanguage
2014-05-01Physica B: Condensed Matter
https://doi.org/10.1016/j.physb.2014.01.041