Visualization of viscous and quantum flows of liquid He-4 due to an oscillating cylinder of rectangular cross section
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F15%3A10320072" target="_blank" >RIV/00216208:11320/15:10320072 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1103/PhysRevB.92.064519" target="_blank" >http://dx.doi.org/10.1103/PhysRevB.92.064519</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevB.92.064519" target="_blank" >10.1103/PhysRevB.92.064519</a>
Alternative languages
Result language
angličtina
Original language name
Visualization of viscous and quantum flows of liquid He-4 due to an oscillating cylinder of rectangular cross section
Original language description
The motions of micrometer-sized solid deuterium particles in liquid He-4, at temperatures between approximately 1.2 and 3 K, are visualized in the proximity of an oscillating cylinder of rectangular cross section (3 mm high and 10 mm wide). The cylinderis oscillating vertically, perpendicularly to its cross-section width, at frequencies between 0.05 and 1.25 Hz, and amplitudes of 5 and 10 mm, resulting in Reynolds numbers Re up to 10(5). The aim of the reported experiments is to investigate systematically the macroscopic vortical structures shed at the cylinder sharp edges, by tracking the deuterium particles. We find that large-scale, millimeter-sized vortices are generated in the surrounding fluid by the oscillating cylinder, both in viscous He I and superfluid He II. An estimate of the strength of the shed vortical structures reveals that, for Re > 10(4), the corresponding magnitudes are approximately equal in He I and He II if, in He II, the kinematic viscosity is suitably defined
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/GAP203%2F11%2F0442" target="_blank" >GAP203/11/0442: Visualization of liquid helium flows</a><br>
Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2015
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
92
Issue of the periodical within the volume
6
Country of publishing house
US - UNITED STATES
Number of pages
9
Pages from-to
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UT code for WoS article
000362207500005
EID of the result in the Scopus database
2-s2.0-84941097270