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Article Dans Une Revue Physics of Fluids Année : 2012

Nonlinear dynamo in a short Taylor--Couette setup

Résumé

It is numerically demonstrated by means of a magnetohydrodynamics code that a short Taylor-Couette setup with a body force can sustain dynamo action. The magnetic threshold is comparable to what is usually obtained in spherical geometries. The linear dynamo is characterized by a rotating equatorial dipole. The nonlinear regime is characterized by fluctuating kinetic and magnetic energies and a tilted dipole whose axial component exhibits aperiodic reversals during the time evolution. These numerical evidences of dynamo action in a short Taylor-Couette setup may be useful for developing an experimental device

Dates et versions

hal-02365518 , version 1 (15-11-2019)

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Caroline Nore, Jean-Luc Guermond, Raphael Laguerre, Jacques Lã©orat, Francky Luddens. Nonlinear dynamo in a short Taylor--Couette setup. Physics of Fluids, 2012, 24 (9), pp.094106_1-094106_15. ⟨10.1063/1.4752756⟩. ⟨hal-02365518⟩
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