Motion of large gas bubbles through liquids in vertical concentric and eccentric annuli

V. C. Kelessidis, A. E. Dukler

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

Taylor bubbles rising through liquids in vertical circular tubes and between parallel planes are axisymmetric and nearly spherical at the top. In a vertical annulus, however, the bubbles are radially asymmetric and never occupy the whole cross-sectional area. Analysis indicates that axisymmetric bubbles rise in an annulus at lower rates than those observed experimentally and hence are never observed in practice. In contrast, the asymmetric bubbles take an elliptic shape which results in higher rise velocities. A theoretical model for the rise velocity of an elliptic bubble has been developed and the comparison with experiment is satisfactory.

Original languageEnglish
Pages (from-to)375-390
Number of pages16
JournalInternational Journal of Multiphase Flow
Volume16
Issue number3
DOIs
Publication statusPublished - 1990
Externally publishedYes

Fingerprint

annuli
eccentrics
Bubbles (in fluids)
bubbles
Gases
Liquids
liquids
gases
circular tubes
Experiments

Keywords

  • annulus
  • rise velocity
  • Taylor bubbles

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes
  • Mechanical Engineering

Cite this

Motion of large gas bubbles through liquids in vertical concentric and eccentric annuli. / Kelessidis, V. C.; Dukler, A. E.

In: International Journal of Multiphase Flow, Vol. 16, No. 3, 1990, p. 375-390.

Research output: Contribution to journalArticle

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