Impact of a Viscous Liquid Drop

Abstract

We simulate the impact of a viscous liquid drop onto a smooth dry solid surface. As in experiments, when ambient air effects are negligible, impact flattens the falling drop without producing a splash. The no-slip boundary condition at the wall produces a boundary layer inside the liquid. Later, the flattening surface of the drop traces out the boundary layer. As a result, the eventual shape of the drop is a "pancake" of uniform thickness except at the rim, where surface tension effects are significant. The thickness of the pancake is simply the height where the drop surface first collides with the boundary layer.

5 pages, 3 figures, submitted to Physical Review Letters

References in corpus (4)

• Drop Splashing on a Dry Smooth Surface
• Making a splash with water repellency
• Liquid drop splashing on smooth, rough and textured surfaces
• Splashing of liquids: interplay of surface roughness with surrounding gas

Cited by in corpus (12)

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• Kelvin Helmholtz instability in an ultrathin air film causes drop splashing on smooth surfaces
• Thin Film Formation During Splashing of Viscous Liquids
• The role of drop shape in impact and splash
• Impact Dynamics of Oxidized Liquid Metal Drops
• Air Entrainment in Dynamic Wetting: Knudsen Effects and the Influence of Ambient Air Pressure
• Droplet impact on asymmetric hydrophobic microstructures
• Droplet impact on surfaces with asymmetric microscopic features
• The role of viscosity on drop impact forces on non-wetting surfaces
• Instability development of a viscous liquid drop impacting a smooth substrate
• Influence of liquid miscibility and wettability on the structures produced by drop-jet collisions
• Three-dimensional high speed drop impact onto solid surfaces at arbitrary angles