Transport of magnetic field by a turbulent flow of liquid sodium

R. Volk; F. Ravelet; R. Monchaux; M. Berhanu; A. Chiffaudel; F. Daviaud; Ph Odier; J. F. Pinton; S. Fauve; N. Mordant; F. Pétrélis

doi:10.1103/PhysRevLett.97.074501

Transport of magnetic field by a turbulent flow of liquid sodium

R. Volk, F. Ravelet, R. Monchaux, M. Berhanu, A. Chiffaudel, F. Daviaud, Ph Odier, J. F. Pinton, S. Fauve, N. Mordant, F. Pétrélis

Research output: Contribution to journal › Article › peer-review

Abstract

We study the effect of a turbulent flow of liquid sodium generated in the von Kármán 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.

Original language	English
Article number	074501
Journal	Physical Review Letters
Volume	97
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevLett.97.074501
Publication status	Published - 1 Jan 2006
Externally published	Yes

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title = "Transport of magnetic field by a turbulent flow of liquid sodium",

abstract = "We study the effect of a turbulent flow of liquid sodium generated in the von K{\'a}rm{\'a}n 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.",

author = "R. Volk and F. Ravelet and R. Monchaux and M. Berhanu and A. Chiffaudel and F. Daviaud and Ph Odier and Pinton, \{J. F.\} and S. Fauve and N. Mordant and F. P{\'e}tr{\'e}lis",

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AU - Volk, R.

AU - Ravelet, F.

AU - Monchaux, R.

AU - Berhanu, M.

AU - Chiffaudel, A.

AU - Daviaud, F.

AU - Odier, Ph

AU - Pinton, J. F.

AU - Fauve, S.

AU - Mordant, N.

AU - Pétrélis, F.

PY - 2006/1/1

Y1 - 2006/1/1

N2 - We study the effect of a turbulent flow of liquid sodium generated in the von Kármán 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.

AB - We study the effect of a turbulent flow of liquid sodium generated in the von Kármán 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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DO - 10.1103/PhysRevLett.97.074501

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SN - 0031-9007

VL - 97

JO - Physical Review Letters

JF - Physical Review Letters

IS - 7

M1 - 074501

ER -

Transport of magnetic field by a turbulent flow of liquid sodium

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