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Nonintrusive optical measurement technique for wavy liquid films: Determination of film thickness and wave structure

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

A noninstrusive optical measurement technique has been developed for the investigation of two-phase gas I liquid-film flow. The film analyser is capable to measure the thickness of shear or gravity driven wavy liquid films moving along a wall. On the basis of a statistical analysis of the recorded time-resolved film thickness, characteristic parameters of the film structure are calculated. Furthermore, the frequency spectrum and the dominant wave frequencies can be obtained by Fourier transformation. At present the liquid-film analyser is applied to liquid-film flows in atomizers for gas turbine combustors.

Original languageEnglish
Pages (from-to)155-160
Number of pages6
JournalTechnisches Messen
Volume54
Issue number4
DOIs
StatePublished - Apr 1987
Externally publishedYes

Keywords

  • Flüssigkeitsfilme
  • Schichtdickenmessung

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