• Corpus ID: 248562821

Behavior of hydrodynamic and magnetohydrodynamic turbulence in a rotating sphere with precession and dynamo action

  title={Behavior of hydrodynamic and magnetohydrodynamic turbulence in a rotating sphere with precession and dynamo action},
  author={Manuel I. Etchevest and Mauro Fontana and Pablo A. Dmitruk},
The effect of precession in a rotating sphere filled with fluid was studied with direct numerical simulations, both in the incompressible hydrodynamics (HD) and magnetohydrodynamics (MHD) scenarios. In both cases the asymptotic state and its dependence with both rotating and precession frequency was analyzed. For the MHD case it was found that a retrograde precession was necessary to obtain self-sustaining dynamos, with a critical value ( γ c = − 3) for the precession frequency, below which dynamo… 

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