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A comparative numerical study of hybrid-stabilized argon–water electric arc |
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| Authors: | Ji?í Jeništa Hidemasa Takana Hideya Nishiyama Milada Bartlová Vladimír Aubrecht Petr K?enek Viktor Sember Alan Mašláni |
| Affiliation: | aInstitute of Plasma Physics, AS CR, v.v.i., Thermal Plasma Department, Za Slovankou 3, 182 00 Prague 8, Czech Republic;bInstitute of Fluid Science, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi, 980-8577, Japan;cBrno University of Technology, Technická 8, 616 00 Brno, Czech Republic |
| Abstract: | The paper presents numerical simulations of the discharge and the near-outlet regions of the hybrid-stabilized argon–water electric arc. Two different numerical methods for solving the set of conservative equations for the continuity, momentum and energy have been applied. The major difference between the results using the two methods occurs in the temperature distribution in arc fringes within the discharge chamber. This fact influences the potential drop, overpressure, reabsorption of radiation and arc efficiency. It is shown that the radial profiles of temperature at the exit nozzle are less influenced by different temperature distribution within the discharge chamber. Comparison with chosen experimental temperature profiles shows very good agreement. |
| Keywords: | Hybrid-stabilized electric arc Mass flow rate Net emission coefficients Partial characteristics SIMPLER iteration procedure LU-SGS algorithm |
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