Dynamo theories

F Rincon - Journal of Plasma Physics, 2019 - cambridge.org
These lecture notes are based on a tutorial given in 2017 at a plasma physics winter school
in Les Houches. Their aim is to provide a self-contained graduate-student level introduction …

The turbulent dynamo

SM Tobias - Journal of fluid mechanics, 2021 - cambridge.org
The generation of a magnetic field in an electrically conducting fluid generally involves the
complicated nonlinear interaction of flow turbulence, rotation and field. This dynamo process …

Liquid-metal experiments on geophysical and astrophysical phenomena

F Stefani - Nature Reviews Physics, 2024 - nature.com
Recent decades have seen enormous progress in the experimental investigation of
fundamental processes that are relevant to geophysical and astrophysical fluid dynamics …

Unappreciated cross-helicity effects in plasma physics: anti-diffusion effects in dynamo and momentum transport

N Yokoi - Reviews of Modern Plasma Physics, 2023 - Springer
The cross-helicity (velocity–magnetic-field correlation) effects in the magnetic-field induction
and momentum transport in the magnetohydrodynamic (MHD) turbulence are investigated …

A turbulent, high magnetic Reynolds number experimental model of Earth's core

DS Zimmerman, SA Triana, HC Nataf… - … Research: Solid Earth, 2014 - Wiley Online Library
We present new experimental results from the University of Maryland Three Meter
Geodynamo experiment. We drive a fully turbulent flow in water and also in sodium at …

The Madison plasma dynamo experiment: A facility for studying laboratory plasma astrophysics

CM Cooper, J Wallace, M Brookhart, M Clark… - Physics of …, 2014 - pubs.aip.org
The Madison plasma dynamo experiment (MPDX) is a novel, versatile, basic plasma
research device designed to investigate flow driven magnetohydrodynamic instabilities and …

The DRESDYN project: liquid metal experiments on dynamo action and magnetorotational instability

F Stefani, A Gailitis, G Gerbeth, A Giesecke… - … & Astrophysical Fluid …, 2019 - Taylor & Francis
Magnetic fields of planets, stars and galaxies are generated by self-excitation in moving
electrically conducting fluids. Once produced, magnetic fields can play an active role in …

Dynamo threshold detection in the von Kármán sodium experiment

S Miralles, N Bonnefoy, M Bourgoin, P Odier… - Physical Review E …, 2013 - APS
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 …

Dissipative effects on the sustainment of a magnetorotational dynamo in Keplerian shear flow

A Riols, F Rincon, C Cossu, G Lesur, GI Ogilvie… - Astronomy & …, 2015 - aanda.org
The magnetorotational (MRI) dynamo has long been considered one of the possible drivers
of turbulent angular momentum transport in astrophysical accretion disks. However, various …

Turbulence reduces magnetic diffusivity in a liquid sodium experiment

S Cabanes, N Schaeffer, HC Nataf - Physical review letters, 2014 - APS
The contribution of small scale turbulent fluctuations to the induction of a mean magnetic
field is investigated in our liquid sodium spherical Couette experiment with an imposed …