Wave formation on vertical falling liquid films

S. V. Alekseenko, V. E. Nakoryakov, B. G. Pokusaev

Research output: Contribution to journalArticlepeer-review

62 Citations (Scopus)


The method of integral relations is used to derive a nonlinear "two-wave" structure equation for long waves on the surface of vertical falling liquid films. This equation is valid in a wide range of Reynolds numbers and reduces to the known equations for high and low Re. Theoretical data for the fastest growing waves are compared with the experimental results on velocities, wave numbers and growth rates of the waves in the inception region. The validity of theoretical assumptions is also confirmed by the direct measurements of the instantaneous velocity profiles in a wave liquid film.

Original languageEnglish
Pages (from-to)607-627
Number of pages21
JournalInternational Journal of Multiphase Flow
Issue number5
Publication statusPublished - 1 Jan 1985
Externally publishedYes

ASJC Scopus subject areas

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

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