Study of impingement of hollow ZrO2 droplets onto a substrate

Arvind Kumar, Sai Gu*, Hani Tabbara, Spyros Kamnis

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

56 Citations (Scopus)


In this paper a numerical study comparing the impingement behaviour of a hollow droplet and an analogous continuous droplet onto a substrate is presented. In the impingement model the transient flow dynamics during impact, spreading and solidification of the droplet are considered. The results of droplet spreading and solidification indicate that the impact process of the hollow droplet on the substrate is distinctly different from an analogous continuous droplet. The hollow droplet results in counter liquid jetting during the impact process, larger solidification time for the splat, smaller and thicker splat as compared to the analogous continuous droplet.

Original languageEnglish
Pages (from-to)164-169
Number of pages6
JournalSurface and Coatings Technology
Publication statusPublished - 15 Apr 2013


  • Hollow droplet
  • Model
  • Thermal spray


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