Quantum turbulence of bellows-driven He-4 superflow: Steady state
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F12%3A10130954" target="_blank" >RIV/00216208:11320/12:10130954 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1103/PhysRevB.86.134515" target="_blank" >http://dx.doi.org/10.1103/PhysRevB.86.134515</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevB.86.134515" target="_blank" >10.1103/PhysRevB.86.134515</a>
Alternative languages
Result language
angličtina
Original language name
Quantum turbulence of bellows-driven He-4 superflow: Steady state
Original language description
Quantum turbulence in superfluid He-4 is studied by the attenuation of second sound in flow channels of 7-mm and 10-mm side square cross sections, and 115-mm length. The ends of the channels are plugged by sintered silver superleaks to allow a pure superflow (i.e., a net flow of the superfluid component only). Flows are generated by mechanically operating a low temperature bellows assembly, as opposed to the helium fountain pump commonly used for previous superflow turbulence studies. The temperature range is 1.35 K {= T {= 1.95 K, at the saturated vapor pressure. The observed turbulent steady state is characterized by the vortex line density L-1/2 = gamma(T)(v - v(c)), where v is the mean superflow velocity and v(c) is the critical velocity for the onset of turbulence. The character of the steady state agrees with the Vinen phenomenological model for thermal counterflow turbulence. The coefficient gamma(T) is in fair agreement with previous thermal pure superflow and counterflow exper
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BK - Liquid mechanics
OECD FORD branch
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Result continuities
Project
<a href="/en/project/GA202%2F08%2F0276" target="_blank" >GA202/08/0276: Selected problems of cryogenic fluid dynamics</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
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
86
Issue of the periodical within the volume
13
Country of publishing house
US - UNITED STATES
Number of pages
11
Pages from-to
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UT code for WoS article
000309728800007
EID of the result in the Scopus database
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