6533b7d0fe1ef96bd125b769

RESEARCH PRODUCT

Non-classical Velocity Statistics in Counterflow Quantum Turbulence

Luca GalantucciMichele Sciacca

subject

PhysicsWork (thermodynamics)Partial differential equationTurbulenceApplied MathematicsQuantum turbulenceNon-Gaussian velocity statisticProbability density functionMechanicsQuantum turbulenceVortexPhysics::Fluid DynamicsSuperfluidityThermal counterflowClassical mechanicsSuperfluid heliumSettore MAT/07 - Fisica MatematicaSuperfluid helium-4

description

In this work we analyse the statistical distribution of turbulent superfluid velocity components in a He II counterflow channel, via two-dimensional numerical simulations pre- sented in past studies. The Probability Density Functions (PDFs) of the superfluid velocity components are investigated at lengthscales smaller than the average intervortex spacing, for varying vortex densities and different wall-normal distances. The results obtained con- firm the non-classical signature of quantum turbulence already observed in past numerical studies.

yearjournalcountryeditionlanguage
2014-05-17Acta Applicandae Mathematicae
https://doi.org/10.1007/s10440-014-9902-3