Analysis of spatial and temporal spectra of liquid film surface in annular gas-liquid flow

Sergey Alekseenko, Andrey Cherdantsev, Oksana Heinz, Sergey Kharlamov, Dmitriy Markovich

Результат исследований: Материалы для журналаСтатья

10 Цитирования (Scopus)

Аннотация

Wavy structure of liquid film in annular gas-liquid flow without liquid entrainment consists of fast long-living primary waves and slow short-living secondary waves. In present paper, results of spectral analysis of this wavy structure are presented. Application of high-speed LIF technique allowed us to perform such analysis in both spatial and temporal domains. Power spectra in both domains are characterized by one-humped shape with long exponential tail. Influence of gas velocity, liquid Reynolds number, liquid viscosity and pipe diameter on frequency of the waves is investigated. When gravity effect is much lesser than the shear stress, similarity of power spectra at different gas velocities is observed. Using combination of spectral analysis and identification of characteristic lines of primary waves, frequency of generation of secondary waves by primary waves is measured.

Язык оригиналаАнглийский
Номер статьи1590
ЖурналExperiments in Fluids
Том54
Номер выпуска9
DOI
СостояниеОпубликовано - 1 сен 2013
Опубликовано для внешнего пользованияДа

ASJC Scopus subject areas

  • Computational Mechanics
  • Mechanics of Materials
  • Physics and Astronomy(all)
  • Fluid Flow and Transfer Processes

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