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

2006, Volume10

Issue 3

172 pages

DOI: 10.1615/HighTempMatProc.v10.i3

Issue price - $155.00

C. Chazelas
Laboratoire Sciences des Procédés Céramiques et de Traitements de Surface, ENSIL,16 rue d'Atlantis, 87068 LIMOGES Cedex, France

E. Moreau
LASEP, Faculté des Sciences, Université d'Orléans, rue Gaston Berger BP 4043, 18028 Bourges Cedex France

G. Mariaux
Laboratoire Sciences des Procédés Céramiques et de Traitements de Surface, ENSIL,16 rue d'Atlantis, 87068 LIMOGES Cedex, France

Armelle Vardelle
University of Limoges, Laboratoire Sciences des Procédés Céramiques et de Traitements de Surface, ENSIL,16 rue d'Atlantis, 87068 LIMOGES Cedex, France

This paper describes a three-dimensional time-dependent model of a direct current plasma torch when the arc operates in the restrike mode. The model is based on the simultaneous solution of the conservation equations of mass, momentum, energy, electric current and electromagnetic equations. It makes it possible to predict the effect of the operating parameters of the plasma torch on the motion of the attachment root on the anode surface and the time-evolution of the gas flow fields inside the nozzle. The simulations, carried out for a conventional plasma spray torch, show that the model gives the good tendencies when a torch parameter is varied, and that the predicted values of gas temperature and velocity at the nozzle exit agree with the experimental values.

DOI: 10.1615/HighTempMatProc.v10.i3.40 Download article, 393-406 pages

Article price - $35.00

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