Planar jet stripping of liquid coatings: Numerical studies

Wojciech Aniszewski*, Youssef Saade, Stéphane Zaleski, Stéphane Popinet

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

In this paper, we present a detailed example of numerical study of the film formation in the context of metal coating. Subsequently we simulate wiping of the film by a planar jet. The simulations have been performed using Basilisk, a grid-adapting, strongly optimized code. Mesh adaptation allows for arbitrary precision in relevant regions such as the contact line or the liquid-air impact zone, while coarse grid is applied elsewhere. This, as the results indicate, is the only realistic approach for a numerical method to cover the wide range of necessary scales from the predicted film thickness (hundreds of microns) to the domain size (meters). The results suggest assumptions of laminar flow inside the film are not justified for heavy coats (liquid zinc). As for the wiping, our simulations supply a great amount of instantaneous results concerning initial film atomization as well as film thickness.

Original languageEnglish
Article number103399
JournalInternational journal of multiphase flow
Volume132
Early online date18 Jul 2020
DOIs
Publication statusE-pub ahead of print/First online - 18 Jul 2020

Keywords

  • Coating
  • Film formation
  • Simulation
  • Turbulence-interface interaction
  • Volume-of-Fluid

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