On the Visualization of Thermal Counterflow of He II Past a Circular Cylinder

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F14%3A10291057" target="_blank" >RIV/00216208:11320/14:10291057 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1007/s10909-013-0961-z" target="_blank" >http://dx.doi.org/10.1007/s10909-013-0961-z</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s10909-013-0961-z" target="_blank" >10.1007/s10909-013-0961-z</a>

Result language
angličtina
Original language name
On the Visualization of Thermal Counterflow of He II Past a Circular Cylinder
Original language description
Thermal counterflow of superfluid He-4 is investigated experimentally in the proximity of a 3 mm diameter cylinder by analyzing the motions of micrometer-sized solid particles, focusing especially on the occurrence of macroscopic vortices. The influenceof heating an opaque brass cylinder by the light source is studied, as thermal counterflow is generated from its surface, and compared with the case of a transparent plexiglass cylinder of the same size. Additionally, we report our preliminary investigation of vertical counterflow around the transparent cylinder. We find that care should be taken when applying conventional visualization techniques-particle image velocimetry and particle tracking velocimetry-as spurious vortical structures might be identified in quantum flows displaying two-fluid behavior.
Czech name
—
Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BK - Liquid mechanics
OECD FORD branch
—

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

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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