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JENIŠTA, J. BARTLOVÁ, M. AUBRECHT, V.
Originální název
The impact of molecular radiation processes in water plasma on performance of water-vortex and hybrid-stabilized electric arcs
Typ
článek ve sborníku ve WoS nebo Scopus
Jazyk
angličtina
Originální abstrakt
Numerical investigation of radiation properties in the worldwide unique type of thermal plasma generator with water vortex stabilization (Gerdien arc) and combined stabilization of arc by argon (Ar) flow and water vortex (the so called hybrid arc) has been carried out. A two-dimensional axisymmetric numerical model describes the region between the inlet and outlet nozzles in the arc discharge chamber. It is assumed that plasma flow is steady, laminar, compressible and in the state of local thermodynamic equilibrium. The governing equations are solved numerically by the Finite Volume Method. Here we study the contribution of water molecular species and of about 3 500 newly-included Ar lines on radiation transport within the discharge region of water and hybrid arcs. Radiation loss from the arc is calculated by the partial characteristics method for atmospheric pressure water and argon-water discharges. In contrast to our previously published results, band spectra of H2, O2, OH molecules and re-calculated Ar line spectrum have been included in the partial characteristics. Results carried out for 150-600 A and for Ar mass flow rates of 7.5-27.5 slm proved that reabsorption in water plasma increases of about 3.5% for all currents but decreases remarkably in the hybrid plasma. For a given current and increasing mass flow rate of Ar reabsorption decreases. Comparison between present calculation and available experiments shows good agreement.
Klíčová slova
arc discharge, divergence of radiation flux, partial characteristics, radiation model, reabsorption
Autoři
JENIŠTA, J.; BARTLOVÁ, M.; AUBRECHT, V.
Rok RIV
2007
Vydáno
17. 6. 2007
Nakladatel
Edl Schamiloglu
Místo
Albuquerque, USA
ISBN
1-4244-0914-4
Kniha
PPPS-2007 Proceedings DVD - The 34th IEEE International Conference on Plasma Science and The 16th IEEE International Pulsed Power Conference
Strany od
1429
Strany do
1432
Strany počet
4
BibTex
@inproceedings{BUT25550, author="Milada {Bartlová} and Vladimír {Aubrecht} and Jiří {Jeništa}", title="The impact of molecular radiation processes in water plasma on performance of water-vortex and hybrid-stabilized electric arcs", booktitle="PPPS-2007 Proceedings DVD - The 34th IEEE International Conference on Plasma Science and The 16th IEEE International Pulsed Power Conference", year="2007", pages="1429--1432", publisher="Edl Schamiloglu", address="Albuquerque, USA", isbn="1-4244-0914-4" }