Coexistence and interplay of quantum and classical turbulence in superfluid He-4: Decay, velocity decoupling, and counterflow energy spectra
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F16%3A10335346" target="_blank" >RIV/00216208:11320/16:10335346 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1103/PhysRevB.94.174504" target="_blank" >http://dx.doi.org/10.1103/PhysRevB.94.174504</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevB.94.174504" target="_blank" >10.1103/PhysRevB.94.174504</a>
Alternative languages
Result language
angličtina
Original language name
Coexistence and interplay of quantum and classical turbulence in superfluid He-4: Decay, velocity decoupling, and counterflow energy spectra
Original language description
We report complementary experimental, numerical, and theoretical study of turbulent coflow, counterflow, and pure superflow of superfluid He-4 in a channel, resulting in a physically transparent and relatively simple model of decaying quantum turbulence that accounts for interactions of coexisting quantum and classical components of turbulent superfluid He-4. We further offer an analytical theory of the energy spectra of steady-state quantum turbulence in the counterflow and pure superflow, based on algebraic approximation for the energy fluxes over scales. The resulting spectra are not of the classic Kolmogorov form, but strongly suppressed by the mutual friction, leading to the energy dissipation at all scales, enhanced by the counterflow-induced decoupling of the normal and superfluid velocity fluctuations.
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
17
Country of publishing house
US - UNITED STATES
Number of pages
18
Pages from-to
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UT code for WoS article
000387533200003
EID of the result in the Scopus database
2-s2.0-84995477558