68th Annual Meeting of the APS Division of Fluid Dynamics (November 22, 2015 — November 24, 2015)

V0054: Bursting of free radially expanding liquid sheets of dilute emulsions

  • Clara Vernay, Laboratoire Charles Coulomb UMR CNRS & University of Montpellier -France
  • Laurence Ramos, Laboratoire Charles Coulomb UMR CNRS & University of Montpellier -France
  • Christian Ligoure, Laboratoire Charles Coulomb UMR CNRS & University of Montpellier -France
DOI: https://doi.org/10.1103/APS.DFD.2015.GFM.V0054

The destabilization of free liquid films is of great importance for aerosol dispersions and is involved in many practical situations ranging from foam engineering, food processing, and environmental science. Among the destabilization processes, the disintegration of a liquid sheet through the formation of holes that perforate the liquid film have been reported to occur in different types of complex fluids, including surfactant solutions, solid suspensions, surfactant-stabilized air bubbles and dilute oil-in-water emulsions. Despite its relative ubiquity, the bursting of liquid sheets through perforation events have not yet been carefully investigated nor modeled. The occurrence of perforation events in a spray directly decreases the fraction of small drops issued from the spray as illustrated in the case of dilute emulsions, which are prone to induce the bursting of liquid sheets. Controlling the perforation processes would therefore allow one to finely tune the size distribution of drops issued from sprays, a goal of uttermost importance in many industrial processes. In this optics, a physical description of the mechanisms at play in perforation processes is desired. 

This work is licensed under the Creative Commons Attribution-NonCommercial 4.0 International License. Any reuse must credit the author(s) and provide a link back to this page.