Splashing of liquids: interplay of surface roughness with surrounding gas

Details Splashing of liquids: interplay of surface roughness with surrounding gas Splashing of liquids: interplay of surface roughness with surrounding gas

2006-08-07

arxiv.org/abs/physics/0608079v2

Phys. Rev. E 76, 066311 (2007)

Physics

Fluid Dynamics

6 pages, 6 figures

Scientific paper

10.1103/PhysRevE.76.066311

We investigate the interplay between substrate roughness and surrounding gas pressure in controlling the dynamics of splashing when a liquid drop hits a dry solid surface. We associate two distinct forms of splashing with each of these control parameters: prompt splashing is due to surface roughness and corona splashing is due to instabilities produced by the surrounding gas. The size distribution of ejected droplets reveals the length scales of the underlying droplet-creation process in both cases.

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