Liquid Precursor Plasma Spraying: Modeling the Interactions between the Transient Plasma Jet and the Droplets
Plasma spraying using liquid feedstock makes it possible to produce thin coatings (< 100 μm) with more refined microstructures than in conventional plasma spraying. However, the low density of the feedstock droplets makes them very sensitive to the instantaneous characteristics of the fluctuating plasma jet at the location where they are injected. In this study the interactions between the fluctuating plasma jet and droplets are explored by using numerical simulations. The computations are based on a three-dimensional and timedependent model of the plasma jet that couples the dynamic behavior of the arc inside the torch and the plasma jet issuing from the plasma torch. The turbulence that develops in the jet flow issuing in air is modeled by a Large Eddy Simulation model that computes the largest structures of the flow which carry most of the energy and momentum.
C. Marchand C. Chazelas G. Mariaux A. Vardelle
University of Limoges, ENSIL, Limoges, France
国际会议
北京
英文
2007-05-14（万方平台首次上网日期，不代表论文的发表时间）