TY - JOUR
TI - Numerical study of the spreading and solidification of a molten particle impacting onto a rigid substrate under plasma spraying conditions
AU - Oukach Soufiane
AU - Hamdi Hassan
AU - El Ganaoui Mohammed
AU - Pateyron Bernard
JN - Thermal Science
PY - 2015
VL - 19
IS - 1
SP - 277
EP - 284
PT - Article
AB - This paper deals with simulation of the spreading and solidification of a  fully molten particle impacting onto a preheated substrate under traditional  plasma spraying conditions. The multiphase problem governing equations of  mass, momentum and energy conservation taking into account heat transfer by  conduction, convection and phase change are solved by using a Finite Element  approach. The interface between molten particle and surrounding air, is  tracked using the Level Set method. The effect of the Reynolds number on the  droplet spreading and solidification, using a wide range of impact velocities  (40-250m/s), is reported. A new correlation that predicts the final spread  factor of splat as a function of Reynolds number is obtained. Thermal contact  resistance, viscous dissipation, wettability and surface tension forces  effects are taken into account.