A Computer Model for Trajectories and Thermal Profiles of Atomised Droplets in Spray Forming

Publisher Website
Google Scholar
Abstract
A Lagrangian computer model has been developed to track droplets and particles within a two-dimensional Eulerian framework of resolved gas velocities and temperatures, calculated to represent typical metal matrix composite (MMC) spray-forming conditions. The Eulerian conservation equations governing the two-phase flow were solved using PHOENICS software and the Lagrangian trajectories of 10,80 and 150 μm Al-4.5 wt% Cu droplets were generated as a function of various starting positions within the gas/metal impingement region to model the stochastic nature of gas atomisation. The temperature and solid fraction of droplets was calculated as they moved within the fast-flowing carrier gas and compared with those obtained under a simpler one dimensional exponentially decaying axial gas velocity.