Bubble size distributions for dispersed air - Water flows in a 100 mm horizontal pipeline

R. Sean Sanders*, M. Mahbubur Razzaque, Jason Schaan, K. Nandakumar, Jacob H. Masliyah, Artin Afacan, Shijie Liu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Scopus citations


The bubble size distributions of air dispersed in water flowing in a 100 mm horizontal pipeline were studied. Size distributions were obtained with a high-speed digital camera at axial positions 0.5, 15.3 and 42.3 m from the air injection point. Air was injected into the pipeline through a narrow tube extending into the pipe, perpendicular to the pipe axis. The effects of average water velocity, air concentration, and injection nozzle diameter on the evolution of bubble size distribution with axial pipe position were studied. For the lowest air concentration of 0.07%, equilibrium bubble size distributions were dependent only on water velocity. Nozzle injection diameter did not affect the downstream bubble size distributions at air concentrations of 0.07% and 0.3%. Levich's break-up theory was found to over-predict the experimental d max for each test condition.

Original languageEnglish
Pages (from-to)858-864
Number of pages7
JournalCanadian Journal of Chemical Engineering
Issue number4
StatePublished - Aug 2004
Externally publishedYes


  • Air-water pipe flows
  • Dispersed bubble flow regime


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