Three-Dimensional Coupled Dynamics of the Two-Fluid Model in Superfluid He 4

Deformed Velocity Profile of Normal Fluid in Thermal Counterflow

Satoshi Yui, Makoto Tsubota, Hiromichi Kobayashi

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The coupled dynamics of the two-fluid model of superfluid He4 is numerically studied for quantum turbulence of the thermal counterflow in a square channel. We combine the vortex filament model of the superfluid and the Navier-Stokes equations of normal fluid. Simulations of the coupled dynamics show that the velocity profile of the normal fluid is deformed significantly by superfluid turbulence as the vortices become dense. This result is consistent with recently performed visualization experiments. We introduce a dimensionless parameter that characterizes the deformation of the velocity profile.

Original languageEnglish
Article number155301
JournalPhysical Review Letters
Volume120
Issue number15
DOIs
Publication statusPublished - 2018 Apr 9

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two fluid models
counterflow
velocity distribution
turbulence
vortex filaments
fluids
Navier-Stokes equation
vortices
simulation

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Three-Dimensional Coupled Dynamics of the Two-Fluid Model in Superfluid He 4 : Deformed Velocity Profile of Normal Fluid in Thermal Counterflow. / Yui, Satoshi; Tsubota, Makoto; Kobayashi, Hiromichi.

In: Physical Review Letters, Vol. 120, No. 15, 155301, 09.04.2018.

Research output: Contribution to journalArticle

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