Comparison of three evaporation models combined to the distillation curve model for multicomponent fuel droplet evaporation

摘要

The objective of this paper is to present a validation of the distillation curve (DC) model with experimental results. Along this validation, three different droplet heating and vaporization models are also compared to see how well they are able to predict the droplet change of diameter. As the DC model requires knowing the distillation curve of complex fuel, it is proposed to use a simplified distillation curve based only on the boiling range temperatures which is more easily known than the exact distillation curve of a given fuel. The simulation results with kerosene fuel show that models 1 and 2 show exactly the same droplet lifetime and temperature profiles under quiescent hot environment. However, the behavior is different when forced convection is present The simplified DC model capture the general behavior of multicomponent fuel evaporation process. Finally, an experiment was conducted with a suspended droplet of gasoline and all three models show different temperature and diameter profiles.