Crown rupture during droplet impact on a dry smooth surface at increased pressure

Drop splashing on a dry smooth surface.

The corona splash due to the impact of a liquid drop on a smooth dry substrate is investigated with high-speed photography. A striking phenomenon is observed: splashing can be completely suppressed by decreasing the pressure of the surrounding gas. The threshold pressure where a splash first occurs is measured as a function of the impact velocity and found to scale with the molecular weight of ...

Effect of chamber pressure on liquid drop impacts on a stationary smooth and dry surface

Effect of chamber pressure on liquid drop impacts on a stationary smooth and dry surface. ii ACKNOWLEDGEMENTS I would like to thank the Graduate College, University of Iowa, for giving me this chance to pursue a Master's degree at this university. Many thanks are due also to Prof. whose constant guidance, support and encouragement were extremely important for the successful completion of this w...

Dynamics of initial drop splashing on a dry smooth surface

We simulate the onset and evolution of the earliest splashing of an infinite cylindrical liquid drop on a smooth dry solid surface. A tiny splash is observed to be emitted out of the rim of the lamella in the early stage of the impact. We find that the onset time of the splash is primarily dependent on the characteristic timescale, which is defined by the impact velocity as well as the drop rad...

Effect of Ambient Pressure and Impact Angle on Splashing Threshold during Droplet Impact

While the threshold of splashing when liquid droplets impact against rigid solid surfaces is known to be related to the Weber number (We), the effect of ambient gas pressure (or density) and the impact angle have not been systematically studied. In this study, we examine the effects of droplet velocity, impact angle, and ambient gas pressure (or density) on the threshold of splashing. In our me...

Spontaneous Rupture of Uterus in Midtrimester Pregnancy Due to Increased Uterine Pressure with PreviousLaparoscopic Myomectomy