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RESEARCH PRODUCT
Longitudinal counterflow in turbulent liquid helium: velocity profile of the normal component
Lidia SalutoMaria Stella MongiovìDavid Jousubject
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-4description
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2013-10-23 | Zeitschrift für angewandte Mathematik und Physik |