Magnetic field dynamos and magnetically triggered flow instabilities
arXiv:1705.08189 · doi:10.1088/1757-899X/228/1/012002
Abstract
The project A2 of the LIMTECH Alliance aimed at a better understanding of those magnetohydrodynamic instabilities that are relevant for the generation and the action of cosmic magnetic fields. These comprise the hydromagnetic dynamo effect and various magnetically triggered flow instabilities, such as the magnetorotational instability and the Tayler instability. The project was intended to support the experimental capabilities to become available in the framework of the DREsden Sodium facility for DYNamo and thermohydraulic studies (DRESDYN). An associated starting grant was focused on the dimensioning of a liquid metal experiment on the newly found magnetic destabilization of rotating flows with positive shear. In this paper, the main results of these two projects are summarized.
17 pages, 10 figures
References in corpus (13)
- Experimental observation and characterization of the magnetorotational instability
- Experimental evidence for magnetorotational instability in a helical magnetic field
- A simple mechanism for the reversals of Earth's magnetic field
- Magnetohydrodynamic experiments on cosmic magnetic fields
- Dynamo regimes and transitions in the VKS experiment
- Experiments on the magnetorotational instability in helical magnetic fields
- Observation of magnetocoriolis waves in a liquid metal Taylor-Couette experiment
- History and results of the Riga dynamo experiments
- Observation of a Free-Shercliff-Layer Instability in Cylindrical Geometry
- Why dynamos are prone to reversals
- Absolute versus convective helical magnetorotational instability in a Taylor-Couette flow
- A unifying picture of helical and azimuthal MRI, and the universal significance of the Liu limit
- Metamorphosis of helical magnetorotational instability in the presence axial electric current