Experimental research on the dynamics of a train of droplets impacting, from droplets to liquid film, continuity and inheritance

Bo Chen, Yuhang Zhang, Zhaofeng Dai, Chen Wang and Xiaosong Zhang

Energy, 2022, vol. 256, issue C

Abstract: The propagation of the droplet inside the air treatment can be simplified as the droplet impact the wall, liquid film, or collide with each other. We build a visual experimental platform for a train of droplets using the micro-vertical injection pump and the high-speed imaging system in order to examine the variations in the impact behavior of the falling droplets. The variables are the impacting velocity and the contact angle. The dynamic process of the first impact (the droplet impact on the plate surface) and, second impact (the droplet impact on the static one resting on the surface) and the final impact (the droplet impacts on the liquid film converged by the previous droplets) are captured and analyzed respectively. The results indicate that the impact velocity and the contact angle are the driving factors of the impact behavior promoting the formation of the tip sub-droplet and the sub-droplet of adhesion respectively. When the droplet impacts the liquid film, there is no generation of the sub-droplet, whose behavior is not dependent on the contact angle but rather the initial velocity. The splashing and protrusion height are converging as the velocity increases. While the velocity retards the splashing process.

Keywords: Visualization; Droplet impingement; Liquid film interfacial waves; Sub-droplets (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0360544222015730
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:256:y:2022:i:c:s0360544222015730

DOI: 10.1016/j.energy.2022.124670

Access Statistics for this article

Energy is currently edited by Henrik Lund and Mark J. Kaiser

More articles in Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().