The effect of nutation angle on the flow inside a precessing cylinder and its dynamo action
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985530%3A_____%2F23%3A00567522" target="_blank" >RIV/67985530:_____/23:00567522 - isvavai.cz</a>
Result on the web
<a href="https://aip.scitation.org/doi/10.1063/5.0134562" target="_blank" >https://aip.scitation.org/doi/10.1063/5.0134562</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1063/5.0134562" target="_blank" >10.1063/5.0134562</a>
Alternative languages
Result language
angličtina
Original language name
The effect of nutation angle on the flow inside a precessing cylinder and its dynamo action
Original language description
The effect of the nutation angle on the flow inside a precessing cylinder is experimentally explored and compared with numerical simulations. The focus is laid on the typical breakdown of the directly forced m =1 Kelvin mode for increasing precession ratio (Poincare number) and the accompanying transition between laminar and turbulent flows. Compared to the reference case with a 90 degrees nutation angle, prograde rotation leads to an earlier breakdown, while in the retrograde case, the forced mode continues to exist also for higher Poincare numbers. Depending largely on the occurrence and intensity of an axisymmetric double-roll mode, a kinematic dynamo study reveals a sensi-tive dependence of the self-excitation condition on the nutation angle and the Poincare? number. Optimal dynamo conditions are found for 90 degrees angle which, however, might shift to slightly retrograde precession for higher Reynolds numbers.
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
10508 - Physical geography
Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physics of Fluids
ISSN
1070-6631
e-ISSN
1089-7666
Volume of the periodical
35
Issue of the periodical within the volume
January
Country of publishing house
US - UNITED STATES
Number of pages
13
Pages from-to
014114
UT code for WoS article
000932332300007
EID of the result in the Scopus database
2-s2.0-85146839932