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On the saturation of astrophysical dynamos: numerical experiments with the no-cosines flow
| Content Provider | CiteSeerX |
|---|---|
| Author | Dorch, S. B. F. Archontis, V. |
| Abstract | Abstract. In the context of astrophysical dynamos we illustrate that the nocosines flow, with zero mean helicity, can drive fast dynamo action and study the dynamo’s mode of operation during both the linear and non-linear saturation regime: It turns out that in addition to a high growth rate in the linear regime, the dynamo saturates at a level significantly higher than normal turbulent dynamos, namely at exact equipartition when the magnetic Prandtl number Prm ∼ 1. Visualization of the magnetic and velocity fields at saturation will help us to understand some of the aspects of the non-linear dynamo problem. |
| File Format | |
| Journal | Solar Physics |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Astrophysical Dynamo Numerical Experiment No-cosines Flow Mean Helicity Magnetic Prandtl Number Prm Fast Dynamo Action Dynamo Mode Non-linear Saturation Regime Nocosines Flow Linear Regime Exact Equipartition Normal Turbulent Dynamo Non-linear Dynamo Problem High Growth Rate Velocity Field |
| Content Type | Text |
| Resource Type | Article |
