Effects of secondary breakup, collision dynamics, gravity and evaporation on droplet size distribution in a pressure-swirl JET A-1 spray

Jedelský, Jan; Malý, Milan; Vankeswaram, Sai Krishna; Zaremba, Matouš; Kardos, Réka; Csemány, Dávid; Červenec, Adam; Józsa, Viktor

doi:10.1016/j.fuel.2023.130103

Cited by 5 publications

(1 citation statement)

References 51 publications

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“…Droplet impact is ubiquitous in daily life and industry, − such as raindrops falling on plant leaves, pesticides spraying on crop surfaces, and ink droplets spraying on papers. Once a droplet impacts a solid superhydrophobic surface, it goes through spreading and retracting, then may rebound from the surface if it has enough energy .…”

Section: Introductionmentioning

confidence: 99%

Double Droplets Impact an Inclined Superhydrophobic Surface

Gao,

Huang,

Liu

et al. 2024

Langmuir

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The rebound dynamics of double droplets impacting an inclined superhydrophobic surface decorated with macro-ridges are investigated via lattice Boltzmann method (LBM) simulations. Four rebound regions are identified, that is, the no-coalescence-rebound (NCR), the partialcoalescence-rebound of the middle part bounces first (PCR-M), and the side part bounces first (PCR-S), as well as the complete-coalescence-rebound (CCR). The occurrence of the rebound regions strongly depends on the droplet arrangement, the center-to-center distance of the droplets, and the Weber number. Furthermore, the contact time is closely related to the rebound regions. The PCR-M region can significantly reduce the contact time because the energy dissipation in this region may decrease which can promote the rebound dynamic. Intriguingly, the contact time is also affected by the droplet arrangement; i.e., droplets arranged parallel to the ridge dramatically shorten the contact time since this arrangement increases the asymmetry of the liquid film. Therefore, for multidrop impact, the contact time can be effectively manipulated by changing the rebound region and the droplet arrangement. This work focuses on elucidating the wetting behaviors, rebound regions, and contact time of the multiple-droplet impacting an inclined superhydrophobic surface decorated with macro-ridges.

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