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Abstract:

We investigate experimentally the advection of a magnetic field by a flow of conducting fluid, at moderate magnetic Reynolds numbers. More specifically, we study the influence of a large scale intense vortex on an externally applied field. We show that at large scales the magnetic field lines are distorted in a way that is consistent with a scenario of magnetic field expulsion by vorticity. Measurements at small scales show that the magnetic fluctuations are also quite sensitive to the large scale vortex motion.

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Received 27 October 1999 and Received in final form 16 March 2000

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Odier, P., Pinton, JF. & Fauve, S. Magnetic induction by coherent vortex motion. Eur. Phys. J. B 16, 373–378 (2000). https://doi.org/10.1007/s100510070239

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  • DOI: https://doi.org/10.1007/s100510070239

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