Experimental study of the linear stability of a falling liquid film in the presence of a turbulent gas stream

S. V. Alekseenko, D. M. Markovich, S. M. Kharlamov, A. V. Cherdantsev

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Using the local electrical conductivity method, the parameters of the linear waves generated on the surface of a falling liquid film in the presence of a co- or counter-current gas stream are measured. The Reynolds numbers of the fluid and the gas were varied from 24 to 125 and from 0 to 8000, respectively. The results are presented in the form of dispersion relations. In the case of the absence of a gas stream, the results are compared with calculations based on a linear integral theory. It is shown that a gas stream increases the instability of the film and a counter-current gas flow has a greater effect on the wave phase velocity than a co-current flow.

Original languageEnglish
Pages (from-to)612-620
Number of pages9
JournalFluid Dynamics
Volume39
Issue number4
DOIs
Publication statusPublished - 1 Jul 2004
Externally publishedYes

Keywords

  • Linear waves
  • Liquid film
  • Turbulent gas stream

ASJC Scopus subject areas

  • Mechanical Engineering
  • Physics and Astronomy(all)
  • Fluid Flow and Transfer Processes

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