液滴・薄液膜衝突時の二次液滴生成に関する研究

抄録

The secondary droplets production during the drop impingement onto a liquid film has been studied extensively by many researchers. It is known that the two types of splashing mechanisms are present: the prompt splash and the late splash. In the prompt splash, small droplets are scattered with high velocity immediately after the impact. Whilst, in the late splash, larger droplets of lower velocity are produced after the development of liquid crown. In the present experiments, the empirical correlations of splashing limit for pure water are proposed separately for the prompt and late splashes. Since the splashing limit was dependent on the impact velocity and liquid film thickness, the two dimensionless numbers (the Weber number and the dimensionless film thickness) were used in the correlations.