Viscosity: its appearance at ultra-short scale, viscous stream buckling and a novel approach to determine critical values of the Reynolds number for laminar-turbulent transition

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60162694%3AG43__%2F13%3A00497131" target="_blank" >RIV/60162694:G43__/13:00497131 - isvavai.cz</a>
Result on the web
<a href="http://vavtest.unob.cz/registr" target="_blank" >http://vavtest.unob.cz/registr</a>
DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Viscosity: its appearance at ultra-short scale, viscous stream buckling and a novel approach to determine critical values of the Reynolds number for laminar-turbulent transition
Original language description
The appearance of the phenomenon of viscosity from the interference of narrow quantum wave packets is discussed. An estimate for the scale, on which viscosity disappears, is provided. The model of viscous streams? buckling is used to determine values ofthe local Reynolds numbers, for which transition to turbulence begins. A universal relation between the local and global critical values of Reynolds numbers is derived. The values of the local Reynolds numbers are then used to estimate the global critical Reynolds numbers, and the values obtained for some well-known flows agree well with empirically obtained values found in the literature.
Czech name
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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
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Project
<a href="/en/project/GAP101%2F10%2F0257" target="_blank" >GAP101/10/0257: Influence of Heat Transfer on Laminar-Turbulent Transition</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2013
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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