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High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes
SJR: 0.137 SNIP: 0.341 CiteScore™: 0.43

ISSN Imprimir: 1093-3611
ISSN On-line: 1940-4360

High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes

DOI: 10.1615/HighTempMatProc.v2.i1.100
pages 129-142

TRANSIENT THREE DIMENSIONAL SIMULATION OF ELECTRIC ARC

Clarisse Delalondre
Laboratoire National d'Hydraulique - EDF, 6 Quai Watier - 78400 Chatou - France
M. Gonzales
CPAT - Universite Paul Sabatier - 118 route de Narbonne - 31062 Toulouse cedex - France
Olivier Simonin
Institut de Mecanique des Fluides de Toulouse, IMFT, Universite de Toulouse, CNRS - Toulouse, FRANCE
Said Zahrai
ABB Corporate Research - 721 78 Vasteras - Sweden; FaxenLaboratoriet, Kungl. Tekniska Hogskolan 100 44 Stockholm, Sweden

RESUMO

This paper describes quantitative numerical investigations of turbulence and arc interaction carried out in our laboratories in the frame of industrial applications such as electric arc furnaces and high voltage circuit breakers. The capabilities of k-epsilon models to account for the laminarization process due to large variations of the viscosity is studied in two dimensional axisymetrical stationary simulations of arc flow. A first attempt at modelling the effects of turbulent fluctuations on electrical source terms is also presented. A second order closure model has been used in order to improve the turbulent flux predictions by taking into account the large anisotropy of the turbulent motion. The second part of this paper is devoted to transient and three dimensional electric arcs modelling using direct simulation methodology. Instationary movements of arc due to the self-induced magnetic forces and the influence of fluid flow have been calculated in simple geometry (arcs between plate electrodes). Computations of statistical properties have been performed in order to study the effect of turbulent fluctuations on electric arcs.


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