Development of Non-Equilibrium Simulation Model of Gas Tungsten Arc

Abstract:

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We have developed non-equilibrium simulation model of GTA. In this paper, simulation results of plasma property of argon GTA at atmospheric pressure are presented and, furthermore, the reliability of the simulation model is evaluated. As a result, it was revealed that non-equilibrium characteristic appears in regions close to both electrodes and the fringe of the arc column where the temperatures decrease below approximately 10000K. It was also found that non-equilibrium region near the anode surface has thickness of 0.3mm. This result agrees with the simulation result predicted with one-dimensional electrical sheath model.

Info:

Periodical:

Materials Science Forum (Volumes 580-582)

Edited by:

Changhee Lee, Jong-Bong Lee, Dong-Hwan Park and Suck-Joo Na

Pages:

659-662

DOI:

10.4028/www.scientific.net/MSF.580-582.659

Citation:

S. Tashiro et al., "Development of Non-Equilibrium Simulation Model of Gas Tungsten Arc", Materials Science Forum, Vols. 580-582, pp. 659-662, 2008

Online since:

June 2008

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Price:

$35.00

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