Instabilities in the flow of thin liquid films

L. Kondic, Javier A. Diez

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

We present computational results concerning the contact line instability as a thin film flows down an inclined plane under gravity. Within the framework of lubrication approximation, we show that the instability and the nature of the pattern formation for a completely wetting fluid strongly depends on the inclination angle. Large inclination angles lead to formation of finger-like rivulets, while smaller angles lead to triangular saw-tooth patterns. However, complete coverage of the substrate by the fluid is always obtained. We also discuss the instability development for long times, and nonlinear mode interaction in large computational domains 1.

Original languageEnglish (US)
Title of host publicationIUTAM SYMPOSIUM ON FREE SURFACE FLOWS
EditorsA.C. KING, YD. SHIKHMURZAEV
Pages161-168
Number of pages8
DOIs
StatePublished - Dec 1 2001

Publication series

NameFluid Mechanics and its Applications
Volume62
ISSN (Print)0926-5112

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

Keywords

  • Contact line
  • Pattern formation
  • Thin liquid films

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