Transition from laminar to turbulent dynamo: the effect of varying Prandtl number
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985530%3A_____%2F21%3A00533012" target="_blank" >RIV/67985530:_____/21:00533012 - isvavai.cz</a>
Result on the web
<a href="https://www.tandfonline.com/doi/abs/10.1080/03091929.2020.1804900?journalCode=ggaf20" target="_blank" >https://www.tandfonline.com/doi/abs/10.1080/03091929.2020.1804900?journalCode=ggaf20</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1080/03091929.2020.1804900" target="_blank" >10.1080/03091929.2020.1804900</a>
Alternative languages
Result language
angličtina
Original language name
Transition from laminar to turbulent dynamo: the effect of varying Prandtl number
Original language description
We carry out numerical dynamo simulations in a spherical shell to assess the influence of varying Prandtl number on the morphology of the induced magnetic field in both cases when the convection is laminar and turbulent. We work in a regime of large magnetic Prandtl number (Pm = 3) due to computational constraints of the full three-dimensional numerical model. We consider dynamos driven by thermal convection in the regimes of small and unit Prandtl numbers. Unlike the laminar convection, in the turbulent regime the morphology of the induced magnetic fields depends only weakly on the Prandtl number. For both values of Pr considered the magnetic field is non-dipolar and small-scale. Together with the previous results of other authors, who found that the morphology of the magnetic field does not change substantially with Pr when Pm is small, the results of our study suggest that the induced magnetic field does not vary substantially with Pr regardless of the strength of the magnetic diffusion.
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
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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
Geophysical and Astrophysical Fluid Dynamics
ISSN
0309-1929
e-ISSN
1029-0419
Volume of the periodical
115
Issue of the periodical within the volume
2
Country of publishing house
GB - UNITED KINGDOM
Number of pages
15
Pages from-to
192-206
UT code for WoS article
000560861400001
EID of the result in the Scopus database
2-s2.0-85089594855