NUMERICAL MODELING OF A DC NON-TRANSFERRED PLASMA TORCH: MOVEMENT OF THE ARC ANODE ATTACHMENT AND RESULTING ANODE EROSION

摘要: This paper describes a 3-D transient modeling of DC plasma spray torch. The model the arc column and its attachment on anode wall is based simultaneous solutions conservation equations mass, momentum, energy electromagnetism equations. It makes it possible to predict motion root surface as well heat load input at spot location. flux afterwards used an data for 1-D enthalpy formulation heating that predicts time-evolution thickness liquid layer quantity vaporized material.