2004
DOI: 10.1007/s00348-003-0772-0
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The role of time in single drop splash on thin film

Abstract: This paper reports on an experimental study of\ud the impact of water drops on thin liquid films. The mor-\ud phology of the impact was studied by still photography,\ud and quantitative results were obtained by a proper image\ud analysis technique. The time evolution of various param-\ud eters like the crown diameter, the crown height, and the\ud secondary drop diameters are reported, and these experi-\ud mental parameters are correlated and compared to avail-\ud able theoretical models. A particular set-up of… Show more

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Cited by 215 publications
(133 citation statements)
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“…High velocity coughs might be expected to have penetrated farther at this time, but in general the decay of jet speed with distance dominates. This is consistent with studies of transient turbulent jets (Johari et al 1997;Cossali et al 2004). The maximum normalized velocity is thus equal to 1 for each cough at each downstream distance.…”
Section: Average Velocity Profilesupporting
confidence: 92%
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“…High velocity coughs might be expected to have penetrated farther at this time, but in general the decay of jet speed with distance dominates. This is consistent with studies of transient turbulent jets (Johari et al 1997;Cossali et al 2004). The maximum normalized velocity is thus equal to 1 for each cough at each downstream distance.…”
Section: Average Velocity Profilesupporting
confidence: 92%
“…Transient jets are observed to attain self-similarity after some development time and some distance downstream (L/D > 6) (Cossali et al 2004). However, at the early time and in the near field analyzed here, the average cough jet does not collapse well with this scaling, using the virtual origin defined by the half-height width.…”
Section: Scalingmentioning
confidence: 69%
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“…The measurements of Cossali et al (2004) determined that the maximum height of the crown for collisions of droplets on wet flat surfaces covered by a thin film and under the same Weber number as here (We ∼ 400) is about 35% greater than the droplet diameter. Considering the size of the examined droplets here, the prediction of Cossali et al (2004) gives a maximum height of about 300 µm, which is within 10% to the prediction of the POD analysis.…”
mentioning
confidence: 99%
“…Experimental and numerical study about the impact of a droplet on a layer of the same liquid on a solid surface was presented by Pan and Law (2007). There are also some experimental studies which have been done in order to investigate the impact of droplets on a thin film layer (Cossali et al, 2004;Wal et al, 2006;Castanet et al, 2009). Krause et al (2011) simulated droplet formation and interaction in emulsification processes.…”
Section: Introductionmentioning
confidence: 99%