F
Frank Stefani
Researcher at Helmholtz-Zentrum Dresden-Rossendorf
Publications - 297
Citations - 5819
Frank Stefani is an academic researcher from Helmholtz-Zentrum Dresden-Rossendorf. The author has contributed to research in topics: Dynamo & Magnetic field. The author has an hindex of 40, co-authored 281 publications receiving 5246 citations.
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Journal ArticleDOI
Detection of a flow induced magnetic field eigenmode in the riga dynamo facility
Agris Gailitis,Olgerts Lielausis,Sergej Dement'ev,Ernests Platacis,Arnis Cifersons,Gunter Gerbeth,Thomas Gundrum,Frank Stefani,Michael Christen,Heiko Hänel,Gotthard Will +10 more
TL;DR: In a closed volume of molten sodium an intense single-vortex-like helical flow has been produced by an outside powered propeller and a slowly growing magnetic field eigenmode was detected.
Journal ArticleDOI
Magnetic Field Saturation in the Riga Dynamo Experiment
Agris Gailitis,Olgerts Lielausis,Ernests Platacis,Sergej Dement'ev,Arnis Cifersons,Gunter Gerbeth,Thomas Gundrum,Frank Stefani,Michael Christen,Gotthard Will +9 more
TL;DR: The dependence of the strength of the magnetic field on the rotation rate is studied and possible saturation mechanisms are discussed.
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Experimental evidence for magnetorotational instability in a Taylor-Couette flow under the influence of a helical magnetic field.
Frank Stefani,Thomas Gundrum,Gunter Gerbeth,Günther Rüdiger,M. Schultz,Jacek Szklarski,Rainer Hollerbach +6 more
TL;DR: Results of a Taylor-Couette experiment with the liquid metal alloy GaInSn are presented, showing evidence for the existence of the magnetorotational instability at Reynolds numbers of order 1000 and HartmannNumbers of order 10.
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Experimental evidence for a transient Tayler instability in a cylindrical liquid-metal column.
Martin Seilmayer,Frank Stefani,Thomas Gundrum,Tom Weier,Gunter Gerbeth,M. Gellert,Günther Rüdiger +6 more
TL;DR: Results of external magnetic field measurements that indicate the transient occurrence of the Tayler instability in good agreement with numerical predictions are presented.
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Colloquium: Laboratory experiments on hydromagnetic dynamos
TL;DR: The first successful experiments at the sodium facilities in Riga and Karlsruhe, and on other experiments which were carried out or planned at various places in the world were reported in this paper.