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ICHMT DIGITAL LIBRARY ONLINE

ISSN 961-91393-0-5

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Year 2004

Volume 3 - Thermal Sciences 2004
Proceedings of The ASME - ZSIS International Thermal Science Seminar II, Bled, Slovenia, June 13-16, 2004

1032 pages

Volume price - $246.00

Droplet-Surface Interactions

E. N. Ganic
Faculty of Mechanical Engineering, University of Sarajevo, Vilsonovo setaliste 9, Bosnia/Herzegovina

S. Sikalo
Faculty of Mechanical Engineering, University of Sarajevo, Vilsonovo setaliste 9, Bosnia/Herzegovina

ABSTRACT

The fluid flow associated with impinging droplets is rather complicated and not understood in detail. Depending on the special circumstances, different characteristic features are observed. Various phenomena can appear when a droplet impacts a surface. The outcome of an impact depends on the droplet properties and of the impacted surface, which may be for example a dry or liquid surface. Following a dimensional analysis, the number of independent parameters can be reduced to a set of dimensionless groups that governs the process considered. An important dimensionless parameter for impact processes is the impact Weber number. However, this number alone is not sufficient to classify different outcomes upon droplet impact. Different outcomes of droplet—surface interaction will be discussed in the present paper. Our consideration is limited to the interaction of single droplets with different horizontal and inclined surfaces.