Quantum turbulence of bellows-driven He-4 superflow: Decay

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F15%3A10320075" target="_blank" >RIV/00216208:11320/15:10320075 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1103/PhysRevB.92.184503" target="_blank" >http://dx.doi.org/10.1103/PhysRevB.92.184503</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevB.92.184503" target="_blank" >10.1103/PhysRevB.92.184503</a>

Result language

angličtina

Original language name

Quantum turbulence of bellows-driven He-4 superflow: Decay

Original language description

We report on studies of quantum turbulence with second sound in superfluid (4H)e in which the turbulence is generated by the flow of the superfluid component through a wide square channel, the ends of which are plugged with sintered silver superleaks, the flow being generated by compression of a bellows. The superleaks ensure that there is no net flow of the normal fluid. In an earlier paper [S. Babuin et al., Phys. Rev. B 86, 134515 (2012)] we have shown that steady flow of this kind generates a density of vortex lines that is essentially identical to that generated by thermal counterflow, when the average relative velocity between the two fluids is the same. In this paper we report on studies of the temporal decay of the vortex-line density, observedwhen the bellows is stopped, and we compare the results with those obtained from the temporal decay of thermal counterflow remeasured in the same channel and under the same conditions. In both cases there is an initial fast decay which,

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BK - Liquid mechanics

OECD FORD branch

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Project

<a href="/en/project/GA14-02005S" target="_blank" >GA14-02005S: Cryogenic helium as a working fluid to study classical and quantum turbulence</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2015

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Physical Review B - Condensed Matter and Materials Physics

ISSN

1098-0121

e-ISSN

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Volume of the periodical

92

Issue of the periodical within the volume

18

Country of publishing house

US - UNITED STATES

Number of pages

13

Pages from-to

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UT code for WoS article

000364014600004

EID of the result in the Scopus database

2-s2.0-84948676540