Chaotic dynamos generated by a turbulent flow of liquid sodium.

نویسندگان

  • F Ravelet
  • M Berhanu
  • R Monchaux
  • S Aumaître
  • A Chiffaudel
  • F Daviaud
  • B Dubrulle
  • M Bourgoin
  • Ph Odier
  • N Plihon
  • J-F Pinton
  • R Volk
  • S Fauve
  • N Mordant
  • F Pétrélis
چکیده

We report the observation of several dynamical regimes of the magnetic field generated by a turbulent flow of liquid sodium (VKS experiment). Stationary dynamos, transitions to relaxation cycles or to intermittent bursts, and random field reversals occur in a fairly small range of parameters. Large scale dynamics of the magnetic field result from the interactions of a few modes. The low dimensional nature of these dynamics is not smeared out by the very strong turbulent fluctuations of the flow.

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عنوان ژورنال:
  • Physical review letters

دوره 101 7  شماره 

صفحات  -

تاریخ انتشار 2008