Three-dimensional effects inside a dc arc plasma torch

• Published in: IEEE transactions on plasma science Vol. 33; no. 2; pp. 400 - 401
• Main Authors: He-Ping Li, Pfender, E.
• Format: Journal Article
• Language: English
• Published: New York IEEE 01-04-2005; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Anodes; Attachment; Direct current; Mathematical analysis; Mechanical engineering; Nontransferred arc; numeric modeling; Plasma; Plasma applications; Plasma arc heating; Plasma chemistry; Plasma measurements; Plasma properties; Plasma sources; Plasma temperature; Plasma torches; Shape; Thermal spraying; Three dimensional imaging; three-dimensional (3-D) effects
• ISSN: 0093-3813; 1939-9375
• DOI: 10.1109/TPS.2005.844954

Three-dimensional (3-D), quasi-steady heat and flow patterns inside a direct current arc plasma torch are calculated for different parameter settings by using Steenbeck's minimum principle. Of particular interest is the axial position of the anode arc-root at the anode surface and the resulting shape of the arc plasma. The predicted anode arc-root attachment position and the arc shape are in reasonable agreement with experimental observations.