Intermittency in spherical Couette dynamos
Fluid Dynamics
2013-04-24 v1
Abstract
We investigate dynamo action in three-dimensional numerical simulations of turbulent spherical Couette flows. Close to the onset of dynamo action, the magnetic field exhibits an intermittent behavior, characterized by a series of short bursts of the magnetic energy separated by low-energy phases. We show that this behavior corresponds to the so-called on-off intermittency. This behavior is here reported for dynamo action with realistic boundary conditions. We investigate the role of magnetic boundary conditions in this phenomenon.
Keywords
Cite
@article{arxiv.1304.6212,
title = {Intermittency in spherical Couette dynamos},
author = {Raphaël Raynaud and Emmanuel Dormy},
journal= {arXiv preprint arXiv:1304.6212},
year = {2013}
}