High Temperature Material Processes (An International Quarterly of High-Technology Plasma Processes) An International Journal

ISSN for PRINT: 1093-3611

For Online Access

Best Paper Award Selection - Editorial Board Site

2001, Volume5

Issue 2

152 pages

Issue price - $144.00

E. Pawelec
Zaklad Fizyki Plazmy, Uniwersytet Opolski, ul. Oleska 48,45-052 Oplole, Poland

B. Pokrzywka
Mt.Suhora, Observatory of Cracow Pedagogical University, ul. Podchorazych 2, 30-084, Krakow, Poland

Clarisse Delalondre
EDF R&D département MFEE, 6 quai Watier 78400 Chatou, France

S. Pellerin
Laboratoire d'Analyse Spectroscopique et d'Energétique des Plasmas (LASEP), Université d'Orleans -Site de Bourges, rue Gaston Berger, BP 4043,18028 Bourges cedex, FRANCE

J. Chapelle
LASEP, Centre Universitaire de Bourges, Rue Gaston Berger, BP 4043, 18028 Bourges Cedex, France

In this work, different numerical and experimental conditions are applied to the local thermodynamic equilibrium (LTE) arc modelisation. The dependence of the temperature and velocity fields on the input gas flow, transport coefficients utilized in calculations, mesh and boundary conditions of the calculation is studied. It is shown that it is possible to obtain very different temperature values just closed to the cathode by the manipulation of the above mentioned input factors. It is also shown that the only possibility to obtain temperature values consistent with the experiments, is by setting the boundary conditions (heat flux) on the cathode to squeeze the cathode spot to the diameter observed in previous experiments.

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