Investigation of Improving the Model for Binary Collision Regimes of Hydrocarbon Droplets

The droplet viscosity and environmental pressure are not included in the traditional model for binary collision regimes, therefore the predicted critical Weber numbers for bouncing, reflexive separation and stretching separation are underestimated. Based on the experimental results, the critical Weber number of bouncing is revised to consider the effects of droplet property and collision condition, while the critical Weber numbers of reflexive and stretching separation are corrected with the droplet property. Compared to the experimental results from binary collisions of tetradecane and diesel droplets, the results indicate that the corrected model for collision regimes of hydrocarbon droplets which effectively reflects the impact of droplet viscosity and environmental pressure shows a better prediction precision than the original model.