On Some New Aspects of Splashing Impact of Drop-Liquid Surface Interactions
The splashing threshold of a single drop impinging onto a wetted surface has been systematically studied to quantitatively classify the impact phenomena under different film thicknesses. A newly designed and highly repeatable film generator has been used for producing thin films with a well-defined thickness. The critical splash level, defined as the minimum energy level to generate the upward satellite droplets from the crown-like liquid filament after impact, was chosen as the classification criterion. The critical splash level has been found not to be a monotonically increasing function of the film thickness, which was however commonly expected in the literature.
KeywordsLiquid Film Transverse Velocity Thin Liquid Film Single Drop Drop Impact
Unable to display preview. Download preview PDF.
- 1.C. Ghielmetti, M. Marengo, C. Mundo and C. Tropea (1997). Experimental Investigation of a Polydispersed water spray impinging on a Conical Surface, Proc. of 7th Int. Conf. of ICLASS, Seoul, Korea, paper 146.Google Scholar
- 9.C. Mundo, M. Sommerfeld and C. Tropea (1998). On the modeling of Liquid sprays impinging on surfaces, Atomization and sprays, 8, 625.Google Scholar
- 11.Wang, A.-B., Chen, C.-C. (2000). Generation of Very Thin Plane Liquid-Film and Visualization of Droplet Impinging on the Film (in Chinese), the Bulletin of the College of Engineering, National Taiwan University, 79, 33.Google Scholar