Detail publikace

Comparison of Performance between Hybrid and Water Vortex Stabilized Electric Arcs

JENIŠTA, J. BARTLOVÁ, M. AUBRECHT, V.

Originální název

Comparison of Performance between Hybrid and Water Vortex Stabilized Electric Arcs

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

angličtina

Originální abstrakt

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.

Klíčová slova

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

Autoři

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

Rok RIV

2004

Vydáno

12. 11. 2004

Nakladatel

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

Místo

Brno

ISBN

80-7355-024-5

Kniha

New Trends in Physics (NTF 2004)

Strany od

178

Strany do

181

Strany počet

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"
}