Prograde and retrograde precession of a fluid-filled cylinder
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985530%3A_____%2F21%3A00552924" target="_blank" >RIV/67985530:_____/21:00552924 - isvavai.cz</a>
Result on the web
<a href="https://iopscience.iop.org/article/10.1088/1367-2630/ac3c0f" target="_blank" >https://iopscience.iop.org/article/10.1088/1367-2630/ac3c0f</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1367-2630/ac3c0f" target="_blank" >10.1088/1367-2630/ac3c0f</a>
Alternative languages
Result language
angličtina
Original language name
Prograde and retrograde precession of a fluid-filled cylinder
Original language description
We numerically study precession driven flows in a cylindrical container whose nutation angle varies between 60 and 90 degrees for prograde and retrograde precession. For prograde precession we observe sharp transitions between a laminar and a turbulent flow state with low and high geostrophic axisymmetric flow components related with a centrifugal instability, while for retrograde precession a rather smooth transition between a low state and a high state occurs. At the same time prograde and perpendicular precession shows an abrupt breakdown of the flow directly excited by the forcing mechanism, which is not the case for retrograde motion. We characterize the corresponding flow states in terms of the directly driven, non-axisymmetric Kelvin mode, the axisymmetric geostrophic mode, and an axisymmetric poloidal flow which is promising for precession-driven dynamo action. The latter issue is discussed with particular view on an optimal parameter choice for the DRESDYN dynamo project.
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
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
New Journal of Physics
ISSN
1367-2630
e-ISSN
1367-2630
Volume of the periodical
23
Issue of the periodical within the volume
12
Country of publishing house
GB - UNITED KINGDOM
Number of pages
19
Pages from-to
123016
UT code for WoS article
000733001300001
EID of the result in the Scopus database
2-s2.0-85122533157