Magnetic reversals in a simple model of MHD
arXiv:0906.0427 · doi:10.1103/PhysRevLett.105.024501
Abstract
We study a simple magnetohydrodynamical approach in which hydrodynamics and MHD turbulence are coupled in a shell model, with given dynamo constrains in the large scales. We consider the case of a low Prandtl number fluid for which the inertial range of the velocity field is much wider than that of the magnetic field. Random reversals of the magnetic field are observed and it shown that the magnetic field has a non trivial evolution linked to the nature of the hydrodynamics turbulence.
4 pages, submitted to PRL
References in corpus (5)
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Cited by in corpus (8)
- Shell Models of Magnetohydrodynamic Turbulence
- Order Out of Chaos: Slowly Reversing Mean Flows Emerge from Turbulently Generated Internal Waves
- Study on the large scale dynamo transition
- Low inertia reversing geodynamos
- Large scale fluctuations and dynamics of the Bullard - von Kármán dynamo
- Evidence for crisis-induced intermittency during geomagnetic superchron transitions
- Magnetic field dynamos and magnetically triggered flow instabilities
- Laboratory experiments and numerical simulations on magnetic instabilities