Magnetic induction in a turbulent flow of liquid sodium: mean behaviour and slow fluctuations

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We study the flow response to an externally imposed homogeneous magnetic field in a turbulent swirling flow of liquid sodium -- the VKS2 experiment in which magnetic Reynolds numbers Rm up to 50 are reached. Induction effects are larger than in the former VKS1 experiment. At Rm larger than about 25, the local amplitude of induced field components supersedes that of the applied field, and exhibits non-Gaussian fluctuations. Slow dynamical instationarities and low-frequency bimodal dynamics are observed in the induction, presumably tracing back to large scale fluctuations in the hydrodynamic flow.

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Fluid Dynamics

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http://salesiana.dossiersoluciones.com/handle/123456789/127620

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0704.2565
 http://arxiv.org/abs/0704.2565

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arXiv