High Speed Visualization of Droplets Impacting with a Dry Surface at High Weber Numbers

The focus of this article is to describe the evolution of the spreading diameter and secondary droplets generated by splashing. High-speed visualization was used to study the time evolution of water droplets impacts with dry surfaces at Weber numbers between 3,500 and 10,000. Different prediction models of the maximal spreading diameter have been compared with each other and with the experimental data. A similarity between the spreading rates was observed in the last stage of the impact at highWeber numbers. The time evolution of the secondary droplets and the formation of the crown was observed and analyzed at the different Weber numbers.


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