Scaling of the Splash Threshold for Low-Viscosity Fluids

Abstract

The ambient gas pressure is determined for the onset of splashing of low-viscosity liquid drops on smooth dry surfaces as we change the control parameters: drop impact velocity, drop radius, viscosity, surface tension, density, and gas molecular weight. This threshold pressure indicates that there are two distinct regimes when drop impact velocity is varied. By rescaling data using functions of only three dimensionless numbers, the commonly used Reynolds and Weber numbers, as well as the ratio of drop radius to gas mean free path, all data is collapsed to a single curve that encompasses both regimes.

arXiv comment5 pages, 5 figures

References in corpus (6)

• Drop Splashing on a Dry Smooth Surface
• Drop impact on superheated surfaces
• Liquid drop splashing on smooth, rough and textured surfaces
• Ultrafast Interference Imaging of Air in Splashing Dynamics
• Creation of prompt and thin-sheet splashing by varying surface roughness or increasing air pressure
• Thin Film Formation During Splashing of Viscous Liquids

Cited by in corpus (7)

• Kelvin Helmholtz instability in an ultrathin air film causes drop splashing on smooth surfaces
• Comparison of splashing in high and low viscosity liquids
• Spreading-splashing transition of nanofluid droplets on a smooth flat surface
• Drop splashing is independent of substrate wetting
• On Liquid Viscosity Effects on Droplet Splash and Receding Breakup on a Smooth Solid Surface at Atmospheric Pressure
• Observation of the pressure effect in simulations of droplets splashing on a dry surface
• Splashing of impacting drops