Transport of magnetic field by a turbulent flow of liquid sodium

Details Transport of magnetic field by a turbulent flow of liquid sodium Transport of magnetic field by a turbulent flow of liquid sodium

2006-03-24

arxiv.org/abs/physics/0603210v2

Physics

Fluid Dynamics

4 pages, 6 figures

Scientific paper

10.1103/PhysRevLett.97.074501

We study the effect of a turbulent flow of liquid sodium generated in the von K\'arm\'an geometry, on the localized field of a magnet placed close to the frontier of the flow. We observe that the field can be transported by the flow on distances larger than its integral length scale. In the most turbulent configurations, the mean value of the field advected at large distance vanishes. However, the rms value of the fluctuations increases linearly with the magnetic Reynolds number. The advected field is strongly intermittent.

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