Drop Splashing on a Dry Smooth Surface

Details Drop Splashing on a Dry Smooth Surface Drop Splashing on a Dry Smooth Surface

2005-01-28

arxiv.org/abs/physics/0501149v1

PRL 94, 184505 (2005)

Physics

Fluid Dynamics

11 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.94.184505

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 the gas and the viscosity of the liquid. Both experimental scaling relations support a model in which compressible effects in the gas are responsible for splashing in liquid solid impacts.

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