Abstract
A previously established model has been applied to a free-burning high-intensity argon arc at elevated pressures for simulating the situations experienced, for example, in plasma processing or in underwater welding. With the calculated thermodyanmic and transport properties and appropriate boundary conditions, solutions of the entire arc are obtained with exception of the electrode sheath regions. The results show that the arc contracts as the pressure increases. As a consequence of this contraction, the current density, the enthalpy flux, and the voltage drop increase also while the velocity of the induced cathode jet decreases.
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References
C. J. Allum, B. E. Pinfold, and J. H. Nixon, “Some effects of shielding gas flow on argon-tungsten arcs operating in high-pressure (1 to 14 bars abs.) environments,”Weld. Res. Suppl. 199-S, July (1980).
E. Pfender, “Electric arcs and arc gas heaters,” inGaseous Electronics, Vol. 1, Academic Press, New York (1978).
K. C. Hsu, K. Etemadi, and E. Pfender, “Study of the free-burning high-intensity argon arc,”J. Appl. Phys. 54, 1293 (1983).
H. R. Griem,Plasma Spectroscopy, McGraw-Hill, New York (1964).
K. C. Hsu, Ph.D. thesis, University of Minnesota, Minneapolis, Minnesota (1982).
R. S. Devoto, “Simplified expressions for the transport properties of ionized monatomic gases,”Phys. Fluids 10, 2105 (1967).
K. Etemadi, Ph.D. thesis, University of Minnesota, Minnesota (1982).
D. L. Evans and R. S. Tankin, “Measurement of emission and absorption of radiation by an argon plasma,”Phys. Fluids 10, 1137 (1967).
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Hsu, K.C., Pfender, E. Modeling of a free-burning, high-intensity arc at elevated pressures. Plasma Chem Plasma Process 4, 219–234 (1984). https://doi.org/10.1007/BF00566842
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DOI: https://doi.org/10.1007/BF00566842