Statistical characterization of two-phase slug flow in a horizontal pipe

J. N.E. Carneiro, R. Fonseca, A. J. Ortega, R. C. Chucuya, A. O. Nieckele, L. F.A. Azevedo

Research output: Contribution to journalArticlepeer-review

35 Scopus citations


The present paper reports the results of an ongoing project aimed at providing statistical information on slugs in two-phase flow in a horizontal pipe. To this end, the flow was examined experimentally and numerically. On the experimental side, three non-intrusive optical techniques were combined and employed to determine the velocity field and bubble shape: particle image velocimetry (PIV), Pulsed Shadow Technique (PST) and Laser-Induced Fluorescence technique (LIF). Statistical information was provided by photogate cells installed at two axial positions. The flow was numerically determined based on the one-dimensional Two-Fluid Model. The tests were conducted on a specially built transparent pipe test section, using air and water as the working fluids. The velocity fields were obtained for flow regimes where the slugs were slightly aerated to facilitate the utilization of the optical methods employed. The main parameters for characterizing the statistically steady flow regime such as slug length and velocity obtained numerically were compared with the experimental data and good agreement was obtained.

Original languageEnglish
Pages (from-to)251-258
Number of pages8
JournalJournal of the Brazilian Society of Mechanical Sciences and Engineering
Issue numberSPEC. ISSUE
StatePublished - 2011
Externally publishedYes


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