Dynamo models with strong generation 1. Kinematic solution and axisymmetric αω-dynamo
| Autor: | Sergey V. Starchenko |
|---|---|
| Rok vydání: | 1994 |
| Předmět: |
Physics
Computational Mechanics Zero (complex analysis) Rotational symmetry Astronomy and Astrophysics Kinematics Physics::Geophysics Physics::Fluid Dynamics Geophysics Classical mechanics Geochemistry and Petrology Mechanics of Materials Simple (abstract algebra) Physics::Space Physics Astrophysics::Solar and Stellar Astrophysics Differential rotation Limit (mathematics) Solar dynamo Dynamo |
| Zdroj: | Geophysical & Astrophysical Fluid Dynamics. 77:55-77 |
| ISSN: | 1029-0419 0309-1929 |
| DOI: | 10.1080/03091929408203675 |
| Popis: | Suggested approximation of a strong generation reduces the kinematic dynamo problem to one simple scalar equation which has a local analytical solution near the maximum of generation. For α-dynamo, the maximum is at the extremum of the α-effect. For αω-dynamo, it is at the extremum of the αω-effect, that is the product of α-effect and differential rotation. These dynamos are named ‘limited’ dynamos, because our parameter Q representing a generation regime tends to zero for α-dynamo and has an infinite limit for pure αω-dynamo. In a realistic situation, Q is not in any limit and there is αω-dynamo, which is well worth pursuing. |
| Databáze: | OpenAIRE |
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