Turbulence without inertia in thermally excited superfluids

Demosthenes Kivotides

doi:10.1016/j.physleta.2005.04.082

Turbulence without inertia in thermally excited superfluids

Demosthenes Kivotides^*

^*Corresponding author for this work

Chemical And Process Engineering

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

Numerical calculations of ⁴He-II hydrodynamics show that a dense tangle of superfluid vortices induces in an initially stationary normal fluid a highly dissipative, complex, vortical flow pattern ("turbulence") with k^-2.2 energy spectrum scaling and fluctuations Reynolds number of order unity. In this normal fluid flow the effects of mutual friction excitation from the superfluid vortices and those of viscous stresses are of the same order.

Original language	English
Pages (from-to)	193-197
Number of pages	5
Journal	Physics Letters A
Volume	341
Issue number	1-4
DOIs	https://doi.org/10.1016/j.physleta.2005.04.082
Publication status	Published - 20 Jun 2005

Keywords

superfluid vortices
vortical flow pattern
turbulence
thermally excited superfluid (TES)

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10.1016/j.physleta.2005.04.082

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title = "Turbulence without inertia in thermally excited superfluids",

abstract = "Numerical calculations of 4He-II hydrodynamics show that a dense tangle of superfluid vortices induces in an initially stationary normal fluid a highly dissipative, complex, vortical flow pattern ({"}turbulence{"}) with k-2.2 energy spectrum scaling and fluctuations Reynolds number of order unity. In this normal fluid flow the effects of mutual friction excitation from the superfluid vortices and those of viscous stresses are of the same order. ",

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N2 - Numerical calculations of 4He-II hydrodynamics show that a dense tangle of superfluid vortices induces in an initially stationary normal fluid a highly dissipative, complex, vortical flow pattern ("turbulence") with k-2.2 energy spectrum scaling and fluctuations Reynolds number of order unity. In this normal fluid flow the effects of mutual friction excitation from the superfluid vortices and those of viscous stresses are of the same order.

AB - Numerical calculations of 4He-II hydrodynamics show that a dense tangle of superfluid vortices induces in an initially stationary normal fluid a highly dissipative, complex, vortical flow pattern ("turbulence") with k-2.2 energy spectrum scaling and fluctuations Reynolds number of order unity. In this normal fluid flow the effects of mutual friction excitation from the superfluid vortices and those of viscous stresses are of the same order.

KW - superfluid vortices

KW - vortical flow pattern

KW - turbulence

KW - thermally excited superfluid (TES)

UR - https://www.scopus.com/pages/publications/20444362088

U2 - 10.1016/j.physleta.2005.04.082

DO - 10.1016/j.physleta.2005.04.082

M3 - Article

AN - SCOPUS:20444362088

SN - 0375-9601

VL - 341

SP - 193

EP - 197

JO - Physics Letters A

JF - Physics Letters A

IS - 1-4

ER -

Turbulence without inertia in thermally excited superfluids

Abstract

Keywords

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