On the impossibility of mean-field dynamos with some spherical symmetry of the motions |
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| Authors: | Jürgen Reichert |
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| Institution: | Akademie der Wissenschaften der DDR, Astrophysikalisches Observatorium , Potsdam |
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| Abstract: | Abstract A spherical mean-field dynamo model is considered in which both the mean motion and the mean electro-motive force due to fluctuating motions show some spherical symmetry. It is shown that under some reasonable assumptions the magnetic field is bound to decay to zero. |
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| Keywords: | Boussinesq fluid stability magnetohydrodynamic waves rotating fluid layer |
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