Search results for "Normal fluid profile"

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HEAT FLUX IN SUPERFLUID TRANSITION AND IN TURBULENT HELIUM COUNTERFLOW

Normal fluid profileRadial flow Vortex diffusionTwo-fluid modelHelium 4Ballistic regimeInhomogeneous vortex tangles.lambda TransitionHeat transferQuantized vorticeEffective thermal conductivityTurbulent superfluid helium ( He II)One-fluid modelExtended Irreversible ThermodynamicEntrance regionSettore MAT/07 - Fisica MatematicaLongitudinal flow
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Longitudinal counterflow in turbulent liquid helium: velocity profile of the normal component

2013

In this paper, the velocity profile of the normal component in the stationary flow of turbulent superfluid helium inside a cylindrical channel is determined, making use of a one-fluid model with internal variables derived from Extended Thermodynamics. In the hypothesis of null barycentric velocity of the fluid (the so-called counterflow situation) it is seen that, in the presence of a sufficiently high vortex length density, the velocity profile of the normal component becomes very flat in the central region of the channel. Thus, a central flat profile of the normal fluid does not necessarily imply that the flow of the normal component is turbulent.

PhysicsTurbulenceChézy formulaLiquid heliumApplied MathematicsGeneral MathematicsFlow (psychology)Normal componentGeneral Physics and AstronomyMechanicsNull (physics)Vortexlaw.inventionPhysics::Fluid DynamicsClassical mechanicslawTurbulent superfluid helium. Normal fluid profile. One-fluid model. Quantized vortices. Heat transfer.Settore MAT/07 - Fisica MatematicaSuperfluid helium-4Zeitschrift für angewandte Mathematik und Physik
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