Influence of electromagnetic boundary conditions onto the onset of dynamo action in laboratory experiments.
We study the onset of dynamo action of the Riga and Karlsruhe experiments with the addition of an external wall, the electromagnetic properties of which are different from those of the fluid in motion. We consider a wall of different thickness, conductivity, and permeability. We also consider the case of a ferrofluid in motion.
Avalos-Zuniga
Raul
R
Laboratoires des Ecoulements Géophysiques et Industriels, Boîte Postale 53, 38041 Grenoble Cedex 9, France.
Plunian
Franck
F
Gailitis
Agris
A