JETP Letters

, Volume 88, Issue 3, pp 167–171 | Cite as

Measurements of turbulent magnetic diffusivity in a liquid-gallium flow

  • S. A. Denisov
  • V. I. Noskov
  • R. A. Stepanov
  • P. G. Frick
Plasma, Gases

Abstract

Direct measurements of the effective conductivity (magnetic diffusivity) in the turbulent flow of a liquid metal have been performed. An nonstationary turbulent flow of a gallium alloy has been excited in a closed toroidal channel with dielectric walls. The Reynolds number reaches a maximum value of Re ≈ 106, which corresponds to the magnetic Reynolds number Rm ≈ 1. The conductivity of the metal in the channel has been determined from the phase shift of forced harmonic oscillations in a series RLC circuit whose inductance is a toroidal coil wound around the channel. The maximum deviation of the effective conductivity of the turbulent medium from the ohmic conductivity of the metal is about 1%.

PACS numbers

47.65.-d 52.65.Kj 91.25.Cw 

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Copyright information

© Pleiades Publishing, Ltd. 2008

Authors and Affiliations

  • S. A. Denisov
    • 1
  • V. I. Noskov
    • 1
  • R. A. Stepanov
    • 1
  • P. G. Frick
    • 1
  1. 1.Institute of Continuous Media Mechanics, Ural DivisionRussian Academy of SciencesPermRussia

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