Our understanding of the dynamics of the Earth's core can be advanced by a combination of
observation, experiments, and simulations. A crucial aspect of the core is the interplay …

Many innovative laboratory experiments have been used to investigate the fluid dynamics of
the Earth's core. Experiments with liquid metals and non-metals range from turbulence and …

Predicting dynamo self-generation in liquid metal experiments has been an ongoing
question for many years. In contrast to simple dynamical systems for which reliable …

A crucial point for the understanding of the von Kármán–sodium (VKS) dynamo experiment
is the influence of soft-iron impellers. We present numerical simulations of a VKS-like …

The discovery of the reversals of Earth's magnetic field and the description of plate tectonics
are two of the main breakthroughs in geophysics in the 20th century. We claim that these two …

The Von Kármán Sodium experiment yields a variety of dynamo regimes, when asymmetry
is imparted to the flow by rotating impellers at different speed F 1 and F 2. We show that as …

We present hydrodynamic and magnetohydrodynamic (MHD) simulations of liquid sodium
flows in the von Kármán sodium (VKS) set-up. The counter-rotating impellers made of soft …

The Arnol'd–Beltrami–Childress flow is a prototype for fast dynamo action, essential to the
origin of magnetic field in large astrophysical objects. Probably the most studied …

We show that hemispherical dynamos can result from weak equatorial symmetry breaking of
the flow in the interior of planets and stars. Using a model of spherical dynamo, we observe …

The elliptical instability can take place in planetary cores and stars elliptically deformed by
gravitational effects, where it generates large-scale three-dimensional flows assumed to be …