Title :
Arc Movements in a Hollow Cathode of a High-Power Plasma Torch
Author :
Freton, Pierre ; Gonzalez, Jean-Jacques ; Gleizes, Alain ; Escallier, Gaelle ; Van Ootegem, Bruno
Author_Institution :
Toulouse Univ., Toulouse
Abstract :
Hollow-cathode arcs are used in industrial thermal-plasma applications like waste treatments or gas heater. The description of such kind of plasma torch is not easy to model due to three facts: vortex gas injection, the transient change of cathode root-attachment position, and the presence of an external magnetic coil to diminish the cathode erosion. This paper proposes a numerical 3-D modeling for representing the arc movement and studying the convection effects within the cathode.
Keywords :
arcs (electric); cathodes; convection; plasma flow; plasma simulation; plasma torches; plasma transport processes; arc movement; cathode erosion; cathode root attachment position change; convection effects; external magnetic coil; high power plasma torch; numerical 3D modeling; plasma torch hollow cathode; vortex gas injection; Hollow cathode torch; modeling; thermal plasma;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2008.920895
