Convective heat transport in two-phase superfluid/ vapor He-4 system
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10389788" target="_blank" >RIV/00216208:11320/18:10389788 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1063/1.5055836" target="_blank" >https://doi.org/10.1063/1.5055836</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1063/1.5055836" target="_blank" >10.1063/1.5055836</a>
Alternative languages
Result language
angličtina
Original language name
Convective heat transport in two-phase superfluid/ vapor He-4 system
Original language description
We have recently shown that under certain cryogenic conditions heat can flow from a colder but constantly heated body to a hotter but constantly cooled body. Specifically, we have provided experimental evidence that heat flows through normal liquid and gaseous phases of 4He from the constantly heated, but cooler, bottom plate of a Rayleigh-Benard convection cell to its hotter, but constantly cooled, top plate. Here we report results of a modified experiment, where the bottom normal liquid helium layer is replaced by superfluid 4He, providing, together with a superfluid film covering the entire cell interior, an effective thermal short-circuit. Applied heat input of order 1 W to the bottom plate results in simultaneous heating of the entire cell: this physical process can be viewed, at least approximately, as a series of subsequent equilibrium states, until upon reaching the superfluid transition the non-equilibrium processes described in our previous study [Proc. Nat. Acad. Sci. USA 110, 8036 (2013)] are fully recovered. Published by AIP Publishing.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
Project
<a href="/en/project/GA17-03572S" target="_blank" >GA17-03572S: Peculiarities of convective flows and heat transport in cryogenic helium</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Low Temperature Physics
ISSN
1063-777X
e-ISSN
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Volume of the periodical
44
Issue of the periodical within the volume
10
Country of publishing house
UA - UKRAINE
Number of pages
4
Pages from-to
1001-1004
UT code for WoS article
000449060800004
EID of the result in the Scopus database
2-s2.0-85056256968