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RESEARCH PAPERS

Anode Heat Flux Density of High-Current Arcs

[+] Author and Article Information
K. T. Shih

Thermodynamics, Convair Aerospace Division, General Dynamics, San Diego, Calif.

R. Dethlefsen

Allis-Chalmers Research, Milwaukee, Wisc.

J. Heat Transfer 93(1), 119-123 (Feb 01, 1971) (5 pages) doi:10.1115/1.3449742 History: Received July 20, 1970; Online August 11, 2010

Abstract

The anode heat flux density of high-current arcs was determined by measuring the time from striking an arc to the onset of surface melting. Data were taken using argon and nitrogen with different metals, pressures, and anode surface temperatures. The anode heat flux density was found to be between 104 and 106 w/cm2 for arc currents of 50 to 2000 amp ; these values increased with increasing arc current and gas pressure and were higher in nitrogen than in argon. The initial anode surface temperature also had a strong effect on the anode attachment spot.

Copyright © 1971 by ASME
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