The Main Issues to Address in Modeling Plasma Spray Torch Operation

Christophe Chazelas (1) , Juan Pablo Trelles (2) , Armelle Vardelle (1)

1 SPCTS-AXE2 - Axe 2 : procédés plasmas et lasers
2 UMass Lowell - University of Massachusetts [Lowell]

The modeling of plasma torch operation has advanced greatly in the last 15 years due to a better understanding of the underlying physics, development of commercial, open-source computational fluid dynamics softwares, and access to high performance and cloud computing. However, the operation mode of the electric arc in plasma torches is controlled by dynamic, thermal, electromagnetic, acoustic and chemical phenomena that take place at different scales and whose interactions are not completely understood yet. Even though no single model of plasma torch operation fully addresses these phenomena, most of these models are useful tools for parametric studies, if their use is reinforced by knowledge of torch operation and the model predictions are validated against experimental data. To increase the level of predictability of the current models, several further steps are needed. This study examines the issues remaining to be addressed in the modeling of plasma spray torch operation and the current critical aspects of these.

Mots clés: electric arc model; non-equilibrium model; plasma torch; torch modeling

Domaines: Matériaux; Matériaux

Christophe Chazelas, Juan Pablo Trelles, Armelle Vardelle. The Main Issues to Address in Modeling Plasma Spray Torch Operation. Journal of Thermal Spray Technology, 2017, 26 (1-2), pp.3-11. ⟨10.1007/s11666-016-0500-y⟩. ⟨hal-01878782⟩