Ravelet F, Berhanu M, Monchaux R, Aumaître S, Chiffaudel A, Daviaud F, Dubrulle B, Bourgoin M, Odier Ph, Plihon N, Pinton J-F, Volk R, Fauve S, Mordant N, Pétrélis F
Service de Physique de l'Etat Condensé, Direction des Sciences de la Matière, CEA-Saclay, CNRS URA 2464, 91191 Gif-sur-Yvette cedex, France.
Phys Rev Lett. 2008 Aug 15;101(7):074502. doi: 10.1103/PhysRevLett.101.074502. Epub 2008 Aug 14.
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.
我们报告了对液态钠湍流产生的磁场的几种动力学状态的观测结果（VKS实验）。在相当小的参数范围内会出现稳态发电机、向弛豫循环或间歇性爆发的转变以及随机场反转。磁场的大规模动力学是由少数模式的相互作用产生的。这些动力学的低维性质不会被流动中非常强烈的湍流波动所掩盖。
