Multiple critical velocities in oscillatory flow of superfluid He-4 due to quartz tuning forks
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F16%3A10335722" target="_blank" >RIV/00216208:11320/16:10335722 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1103/PhysRevB.94.214503" target="_blank" >http://dx.doi.org/10.1103/PhysRevB.94.214503</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevB.94.214503" target="_blank" >10.1103/PhysRevB.94.214503</a>
Alternative languages
Result language
angličtina
Original language name
Multiple critical velocities in oscillatory flow of superfluid He-4 due to quartz tuning forks
Original language description
We report recent investigations into the transition to turbulence in superfluid He-4, realized experimentally by measuring the drag forces acting on two custom-made quartz tuning forks with fundamental resonances at 6.5 kHz and 55.5 kHz, in the temperature range 10 mK to 2.17 K. In pure superfluid in the zero temperature limit, three distinct critical velocities were observed with both tuning forks. We discuss the significance of all critical velocities and associate the third critical velocity reported here with the development of large vortical structures in the flow, which thus starts to mimic turbulence in classical fluids. The interpretation of our results is directly linked to previous experimental work with oscillators such as tuning forks, grids, and vibrating wires, focusing on the behavior of purely superfluid He-4 at very low temperatures.
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/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)
Others
Publication year
2016
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
ISSN
2469-9950
e-ISSN
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Volume of the periodical
94
Issue of the periodical within the volume
21
Country of publishing house
US - UNITED STATES
Number of pages
13
Pages from-to
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UT code for WoS article
000389500900004
EID of the result in the Scopus database
2-s2.0-85001930587