Evolution of Views on the Wavy Structure of a Liquid Film in Annular Dispersed Gas-Liquid Flow

A. V. Cherdantsev, D. M. Markovich

Research output: Contribution to journalArticlepeer-review

Abstract

The wavy structure of a liquid film sheared by high-velocity gas flow with droplet entrainment from the film surface has been investigated. The paper presents an analysis of methods for measuring the local fluid film thickness and a review of classical concepts of the wave hydrodynamics of annular dispersed flow obtained in early studies using rather crude methods. A systematic description of the structure, evolution, and interaction of waves of various types is given based on an analysis of high-resolution spatio-temporal records of film thickness obtained by laser-induced fluorescence. The results are compared with the results of recent experiments, and the necessity of revising some classical concepts is shown. Directions for further research are suggested.

Original languageEnglish
Pages (from-to)331-342
Number of pages12
JournalJournal of Applied Mechanics and Technical Physics
Volume61
Issue number3
DOIs
Publication statusPublished - 1 May 2020

Keywords

  • annular dispersed flow
  • disturbance waves
  • droplet entrainment
  • field measurements of liquid film thickness
  • laser-induced fluorescence
  • ripple waves
  • wave interaction

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