Oscillating droplet evaporation modelling for spray combustion simulation

The vapour and gas phase conservation equations are analytically solved in a spheroidal coordinate systems, yielding the drop surface vapour flux under steady-state conditions, for oblate and prolate drops. The drop evaporation rate can be defined as function of drop spheroid shape and drop surface. The solution is easily implementable to the case of prolate/oblate oscillating drops, under quasi-steady assumption, which is found to be valid under the range of operating conditions typical of spray combustion applications.