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Direct measurement of effective electro conductivity of turbulent liquid metal
Author(s) -
Frick P.,
Denisov S.,
Noskov V.,
Stepanov R.
Publication year - 2008
Publication title -
astronomische nachrichten
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 63
eISSN - 1521-3994
pISSN - 0004-6337
DOI - 10.1002/asna.200811017
Subject(s) - conductivity , turbulence , reynolds number , toroid , mechanics , ohmic contact , physics , liquid metal , materials science , electrical resistivity and conductivity , condensed matter physics , nuclear magnetic resonance , electrode , plasma , composite material , quantum mechanics
Direct measurement of effective electro conductivity are performed in a nonstationary turbulent flow of liquid gallium, generated in a closed toroidal channel. The peak level of the Reynolds number reached Re ≈ 10 6 , what corresponds to the magnetic Reynolds number Rm ≈ 1. The conductivity of the liquid metal was determined measuring the phase shift between sinusoidal voltage and current in the RLC‐circuit, the inductance of which was made by the toroidal coil embracing the channel. The maximal deviation of electrical conductivity from its ohmic value reaches about 1%. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)