Open AccessDriven Motion and Instability of an Atmospheric Pressure Arc
Author(s) -
M. Karasik
Publication year - 1999
Language(s) - English
Resource type - Reports
DOI - 10.2172/15034
Subject(s) - instability , arc (geometry) , atmospheric pressure , motion (physics) , environmental science , mechanics , geology , meteorology , physics , classical mechanics , engineering , mechanical engineering
Atmospheric pressure arcs are used extensively in applications such as welding and metallurgy. However, comparatively little is known of the physics of such arcs in external magnetic fields and the mechanisms of the instabilities present. In order to address questions of equilibrium and stability of such arcs, an experimental arc furnace is constructed and operated in air with graphite cathode and steel anode at currents 100-250 A. The arc is diagnosed with a gated intensified camera and a collimated photodiode array, as well as fast voltage and current probes