A mathematical model for predicting spray atomization characteristics in an Eulerian-Eulerian framework

A new mathematical model is developed for calculating droplet break-up frequency based on both drag and turbulence induced fragmentation stresses. The droplet break-up model is introduced into a CFD methodology that is based on the Eulerian-Eulerian approach. The CFD solver couples the population balance equation along with the Navier-Stokes equations for predicting the droplets diameter. Finally, preliminary results using this CFD model are presented for the case of a coaxial airblast atomizer and a good agreement with the experimental data is achieved. (C) 2010 Elsevier Ltd. All rights reserved.