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Volume: 15 | Article ID: art00019_1
Study of the Impact of Drops onto Solid Surfaces
  DOI :  10.2352/ISSN.2169-4451.1999.15.1.art00019_1  Published OnlineJanuary 1999

In this paper, we report experimental results on the collision dynamics of a water droplet impinging on a rigid surface. The rigid surfaces considered cover a wide range of roughness' and porosities from stainless steel to paper.The experimental method used is based on a highspeed cinematography technique combined with advanced image processing means. The observations are made at ambient pressure, ambient temperature, with an initial droplet diameter of 2 mm.The measurements are performed on a large range of variation of relevant dimensionless parameters in order to determine different thresholds. We show that whatever the operating conditions, the drop spreads and retracts under the action of inertia and capillarity respectively. In the initial stages of impact, the transient evolution of wetted area and spreading rate for a given impact Weber number, appear to be independent of the surface on which the droplet impinges. These results are discussed within the framework of possible physical mechanisms.

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G. Chaidron, A. Soucemarianadin, P. Attané, "Study of the Impact of Drops onto Solid Surfacesin Proc. IS&T Int'l Conf. on Digital Printing Technologies (NIP15),  1999,  pp 70 - 73,

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