A high magnetic Reynolds number dynamo
Abstract
A boundary-layer solution to a high magnetic Reynolds number R periodic dynamo model shows that: (1) flux expulsion forces the magnetic field into flux sheets; (2) the principal contribution to the α effect arises from regions of flow stagnation along a flux sheet; and (3) the α effect scales as R-1/2. Arguments for these effects persisting in turbulent dynamos are given.
- Publication:
-
Physics of Fluids
- Pub Date:
- April 1987
- DOI:
- 10.1063/1.866304
- Bibcode:
- 1987PhFl...30.1079P
- Keywords:
-
- Boundary Layer Equations;
- Dynamo Theory;
- High Reynolds Number;
- Solar Cycles;
- Boundary Value Problems;
- Computational Fluid Dynamics;
- Magnetic Fields;
- Velocity Distribution;
- Plasma Physics