Precession driven dynamos

By A. Tilgner. 2005

181 citations recorded by the source corpus.

The dynamo effect is demonstrated numerically in precession driven flow in a spherical container. Both laminar as well as unstable flows act as dynamos. At low Ekman numbers in unstable flows, the dynamo mechanism relies predominantly on the components of the flow excited by instabilities. All calculations are performed in a frame of reference attached to the boundaries. In this frame, the rotation axis of the fluid executes a periodic motion with a period equal to the rotation period of the boundaries, whereas the magnetic dipole moment undergoes slower variations interrupted by reversals.

Subfields: Astronomy and Astrophysics, Molecular Biology, Physiology

View Paper: https://www.semanticscholar.org/paper/d15a7093654bc010ce26483742400ae384e39d63

Citations in the corpus

• Thermal evolution of the core with a high thermal conductivity (2014, unknown): “Tilgner, 2005; C´ebron et al., 2010; Le Bars et al., 2015).”