Publication detail

Comparison of Performance between Hybrid and Water Vortex Stabilized Electric Arcs

JENIŠTA, J. BARTLOVÁ, M. AUBRECHT, V.

Original Title

Comparison of Performance between Hybrid and Water Vortex Stabilized Electric Arcs

Type

conference paper

Language

English

Original Abstract

The present paper deals with numerical modelling of electric arc stabilized by water vortex. Two-dimensional axisymmetric model includes the arc discharge area between the cathode and the outlet nozzle of the water plasma torch. Thermal, electrical and fluid-dynamic characteristics as well as power losses of such arc has been studied for the range of currents 150-600 A and three different radiation models (net emission coefficient, net emission approach with reabsorption, partial characteristics). It was proved that the amount of energy losses transferred radially from the arc by conduction and radiation range between 70 and 35 % of the input power. Temperature and velocity fields within the discharge are close to each other for the partial characteristics model and for the net emission model with zero reabsorption of radiation. Calculations carried out by the partial characteristics method showed that reabsorption of radiation in arc fringes reaches about 26 % for the studied range of currents.

Keywords

arc, divergence of radiation flux, partial characteristics, radiation model, reabsorption.

Authors

JENIŠTA, J.; BARTLOVÁ, M.; AUBRECHT, V.

RIV year

2004

Released

12. 11. 2004

Publisher

Ing. Zdeněk Novotný, CSc., Ondráčkova 105, Brno

Location

Brno

ISBN

80-7355-024-5

Book

New Trends in Physics (NTF 2004)

Pages from

178

Pages to

181

Pages count

4

BibTex

@inproceedings{BUT11813,
  author="Jiří {Jeništa} and Milada {Bartlová} and Vladimír {Aubrecht}",
  title="Comparison of Performance between Hybrid and Water Vortex Stabilized Electric Arcs",
  booktitle="New Trends in Physics (NTF 2004)",
  year="2004",
  pages="178--181",
  publisher="Ing. Zdeněk Novotný, CSc., Ondráčkova 105, Brno",
  address="Brno",
  isbn="80-7355-024-5"
}