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- Title
Measurements of turbulent magnetic diffusivity in a liquid-gallium flow.
- Authors
Denisov, S.; Noskov, V.; Stepanov, R.; Frick, P.
- 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%.
- Subjects
GALLIUM; TURBULENCE; LIQUID metals; AERODYNAMICS; TOROIDAL magnetic circuits
- Publication
JETP Letters, 2008, Vol 88, Issue 3, p167
- ISSN
0021-3640
- Publication type
Article
- DOI
10.1134/S0021364008150058