Maximum Spread of Droplet Impacting onto Solid Surfaces with Different Wettabilities: Adopting a Rim–Lamella Shape

摘要

0) is utilized successfully to depict the droplet shape at different We in a unifying manner. Comprehensive evaluations of the model demonstrate that the theoretical prediction can well recover the features of the experimental observations. The L2-error analysis demonstrates the improvement of the proposed model in predicting β_(m) for a wide range of We = 10~(–1) to 10~(3): the calculated errors are smaller than 8% for all six surfaces. Moreover, the proposed model can also be applied to predict energy conversion/dissipation during the droplet spreading process and the effects of surface wettability on β_(m) in a reasonable manner. The variation of the percentage of the surface energy and viscous dissipation is consistent with that in previous simulations. The weakness of the current model for predicting β_(m) at extremely low Weber number (We < 1) is also explained.]]>