3-D simulation of particle acceleration and heating under TBC plasma spraying

摘要

3D model of particles' heating and acceleration, which provides computation of thermal fields for all possible phase states of particle materials and considers process of their evaporation, is presented in this paper. Stochastic behaviour of the particle's entry causes particles' distributions on the surface. The results of such a distribution on the substrate surface depending on the particles' initial diameter, impact velocity and surface temperature are discussed. Models are practically realized in the program code PLASMA 2002. Studying of the peculiarities of particle's heating and acceleration under atmospheric plasma spraying of stabilized zirconium and aluminium oxide are carried out with implementation of these models. The influence of the particle diameter, initial velocity and position of injection on particle's trajectory, temperature history and distribution on the substrate was determined.