Fluid Density and Impact Cavity Formation

摘要

Characteristics of the impact cavity formed when a steel ball is dropped into aqueous solutions of densities ranging from 0.98 g·cm-3 to 1.63 g·cm-3wereinvestigated. A high-speed camera was used to record the formation and collapse of the cavity. The results showed cavity diameter, volume, andpinch-off timeareindependent of fluid density, on average. There was an unexplained reduction in cavity formationfor densities of 1.34 g·cm-3and 1.45 g·cm-3.