Regular waves on vertical falling rivulets at different wetting contact angles

S. V. Alekseenko, A. V. Bobylev, V. V. Guzanov, D. M. Markovich, S. M. Kharlamov

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Results of experimental investigation of regular wave conditions for straight rivulets falling down a vertical plane are presented. Field measurements of the local thickness of rivulets were carried out with the help of laser-induced fluorescence. Data on the wave structure of rivulets is shown in a wide range of frequencies of regular waves for different Reynolds numbers of the flow and contact wetting angles. It was observed for all studied wave conditions that transverse width of rivulets and wetting angles are insensitive to the phase of propagating waves. Moreover, it was found that the wave structure of rivulets differs significantly for the cases of low and high values of the contact angle.

Original languageEnglish
Pages (from-to)345-357
Number of pages13
JournalThermophysics and Aeromechanics
Volume17
Issue number3
DOIs
Publication statusPublished - 1 Dec 2010
Externally publishedYes

Keywords

  • contact wetting angle
  • laser-induced fluorescence
  • regular waves
  • rivulet

ASJC Scopus subject areas

  • Radiation
  • Nuclear and High Energy Physics

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