Modelling the evaporation of a multicomponent ellipsoidal drop

A model for heating and evaporation of non-spherical multicomponent drops is presented, based on the solution of energy and species conservation equations in orthogonal curvilinear coordinates, accounting also for the effect of convective conditions according to the film theory approach. The instantaneous evaporation rate of multicomponent drops is calculated as function of increased surface area due to drop deformation. The model is applied to spheroidal drops under quasi-steady and transient conditions, analysing the effect of drop size and velocity on the temperature evolution, for a range of drop and gas temperature operating conditions.