Liquid Sodium Experiments: The Effect of Turbulence and Lorentz Forces

Details Liquid Sodium Experiments: The Effect of Turbulence and Lorentz Forces Liquid Sodium Experiments: The Effect of Turbulence and Lorentz Forces

Jul 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aipc..622..447s&link_type=abstract

EXPERIMENTAL CHAOS: 6th Experimental Chaos Conference, Proceedings of a conference held in Potsdam, Germany, 22-25 July 2001. Ed

Astronomy and Astrophysics

Astrophysics

2

Geomagnetism, Liquid Metals, Liquid Sodium, Lorentz Force, Magnetic Effects, Magnetic Fields, Magnetohydrodynamics, Sodium, Turbulence, Origins And Models Of The Magnetic Field, Dynamo Theories

Scientific paper

We are pursuing several liquid sodium experiments in order to understand magnetic field generation in astrophysical bodies. In one experiment, pulse decay techniques using small externally applied magnetic fields quantify the system's approach toward a dynamo. Using the same apparatus, a large constant external magnetic field was applied modifying the flow through the Lorentz force. The induced field fluctuations indicate four distinct regimes that were uniquely quantified by the Elasasser number, the ratio of the Lorentz force to the advective force. Two future experiments are also described briefly.

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