New features of drops dynamics under Marangoni effect

R. Monti, R. Savino, D. Paterna, M. Lappa

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Abstract

Following initial observations in microgravity, laboratory experiments have been performed to investigate wetting and coalescence phenomena in presence of Marangoni effect.
The problem was also investigated by numerical simulations based on the existence of a thin air film between the adjacent surfaces (liquid-liquid or liquid-solid) convected by the Marangoni velocities. This entrainment effect results in a pressure increase that balances the pressure necessary to prevent coalescence or wetting of the surfaces.
A number of experimental findings and numerical simulations are reviewed, including anchored or free drops on solid or liquid surfaces, and the behaviour of droplets in liquid matrices.
Original languageEnglish
Title of host publicationRecent Research Developments in Fluid Dynamics
Place of PublicationIndia
Pages15-32
Number of pages18
Volume3
Publication statusPublished - 2000

Keywords

  • Marangoni effect
  • drops dynamics
  • microgravity
  • coalescence phenomena
  • numerical simulations
  • thin air film

Cite this

Monti, R., Savino, R., Paterna, D., & Lappa, M. (2000). New features of drops dynamics under Marangoni effect. In Recent Research Developments in Fluid Dynamics (Vol. 3, pp. 15-32).