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29 March 2024
 
  » arxiv » 1010.3240

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Influence of Liquid Viscosity on Droplet Impingement on Superhydrophobic Surfaces
John T. Pearson ; Daniel Maynes ; Brent W. Webb ;
Date 15 Oct 2010
AbstractThis fluid dynamics video describes droplet impingement experiments performed on superhydrophobic surfaces. When droplets of pure water are impinged upon superhydrophobic surfaces, a region of thin coherent jets are observed for Weber numbers between 5 and 15. Also, peripheral splashing is observed for Weber numbers above about 200. When the viscosity of the droplet is increased by mixing glycerol with the water, the thin jets are not observed and peripheral splashing is delayed somewhat. In the Weber number range where pure water droplets are observed to splash peripherally, the water/glycerol droplets are observed to have two-pronged jets.
Source arXiv, 1010.3240
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