Effect of surfactant on the long-wave instability of a shear-imposed liquid flow down an inclined plane

Hsien Hung Wei

Research output: Contribution to journalArticlepeer-review

34 Citations (Scopus)

Abstract

The effect of an insoluble surfactant on the linear stability of a shear-imposed flow down an inclined plane is examined in the long-wavelength limit. It has been known that a free falling film flow with surfactant is stable to long-wavelength disturbances at sufficiently small Reynolds numbers. Imposing an additional interfacial shear, however, could cause instability due to the shear-induced Marangoni effect. Two modes of the stability are identified and the corresponding growth rates are derived. The underlying mechanisms of the stability are also elucidated in detail.

Original languageEnglish
Article number012103
Pages (from-to)012103-012103-5
JournalPhysics of Fluids
Volume17
Issue number1
DOIs
Publication statusPublished - 2005 Jan

All Science Journal Classification (ASJC) codes

  • Computational Mechanics
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

Fingerprint Dive into the research topics of 'Effect of surfactant on the long-wave instability of a shear-imposed liquid flow down an inclined plane'. Together they form a unique fingerprint.

Cite this