A Liquid Metal Flume for Free Surface Magnetohydrodynamic Experiments | Zendy

M. D. Nornberg | Zendy; Hantao Ji | Zendy; J. L. Peterson | Zendy; J. Rhoads | Zendy

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A Liquid Metal Flume for Free Surface Magnetohydrodynamic Experiments

Author(s) -

M. D. Nornberg,

Hantao Ji,

J. L. Peterson,

J. Rhoads

Publication year - 2008

Publication title -

osti oai (u.s. department of energy office of scientific and technical information)

Language(s) - English

Resource type - Reports

DOI - 10.2172/938980

Subject(s) - magnetohydrodynamic drive , flume , free surface , mechanics , liquid metal , materials science , entrainment (biomusicology) , flow (mathematics) , velocimetry , particle image velocimetry , open channel flow , magnetohydrodynamics , magnetic field , acoustics , physics , metallurgy , rhythm , quantum mechanics , turbulence

We present an experiment designed to study magnetohydrodynamic effects in free-surface channel flow. The wide aspect ratio channel (the width to height ratio is about 15) is completely enclosed in an inert atmosphere to prevent oxidization of the liquid metal. A custom-designed pump reduces entrainment of oxygen, which was found to be a problem with standard centrifugal and gear pumps. Laser Doppler Velocimetry experiments characterize velocity profiles of the flow. Various flow constraints mitigate secondary circulation and end effects on the flow. Measurements of the wave propagation characteristics in the liquid metal demonstrate the surfactant effect of surface oxides and the damping of fluctuations by a cross-channel magnetic field

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