Inertial two- and three-dimensional thin film flow over topography

S. Veremieiev, H. M. Thompson, Y. C. Lee, P. H. Gaskell

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The effect of inertia on gravity-driven thin film free-surface flow over substrates containing topography is considered. Flow is modelled using a depth-averaged form of the governing Navier-Stokes equations and the discrete analogue of the coupled equation set solved accurately using an efficient full approximation storage (FAS) and full multigrid (FMG) technique. The free-surface disturbance induced by topographic features is illustrated by considering examples of gravity-driven flow over and around peak, trench and occlusion topography. Results are presented which demonstrate how increasing Reynolds number can significantly enhance the magnitude of free-surface disturbances, a feature which may have important consequences for the wide range of coating process that aim to maximise free-surface planarity. (C) 2010 Elsevier B.V. All rights reserved.

Original languageEnglish
Pages (from-to)537-542
Number of pages6
JournalChemical Engineering and Processing: Process Intensification
Volume50
Issue number5-6
DOIs
Publication statusPublished - 2011

Keywords

  • Coating
  • Thin film flows
  • Microfluidics
  • Topography
  • INCLINED WAVY PLANES
  • 2-DIMENSIONAL TOPOGRAPHY
  • VISCOUS FILMS
  • LIQUID-FILMS
  • RESONANCE
  • SURFACES

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