Convective heat transport in two-phase superfluid/vapor 4He system
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081731%3A_____%2F18%3A00496307" target="_blank" >RIV/68081731:_____/18:00496307 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1063/1.5055836" target="_blank" >http://dx.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 4He 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 of4He from the constantly heated, but cooler, bottom plate of a Rayleigh-Bénard 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 superfluid4He, 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.
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
10305 - Fluids and plasma physics (including surface physics)
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
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
US - UNITED STATES
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