Premium
Convective Temperature Fluctuations in Liquid Gallium in Dependence on Static and Rotating Magnetic Fields
Author(s) -
Dold P.,
Benz K. W.
Publication year - 1995
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170300823
Subject(s) - prandtl number , transversal (combinatorics) , convection , gallium , magnetic field , amplitude , condensed matter physics , physics , field (mathematics) , atmospheric temperature range , mechanics , rayleigh scattering , rotating magnetic field , rayleigh number , thermodynamics , materials science , optics , natural convection , quantum mechanics , mathematical analysis , mathematics , pure mathematics , metallurgy
The influence of static axial, static transversal, and rotating magnetic fields on convective temperature fluctuations in liquid gallium (temperature range around 800 °C, Prandtl number 2.5 · 10 −3 ) has been investigated. For a Rayleigh number of 6.3 · 10 −5 (Δ T = 10°C, h = 50 mm), convective temperature fluctuations with peak to peak values of 3 °C have been measured. Depending on the strength, the frequency, and the configuration of the field, they could be eliminated to Δ T < 0.01 °C (static axial field of 182 mT), damped to a nearly periodic state with 0.1 °C amplitudes (static transversal field of 45 mT), or reduced to 0.03 °C oscillations by applying a rotating field.