Axial development of annular, churn and slug flows in a long vertical tube

Waltrich, P. J., Falcone, G. and Barbosa, J. R. (2013) Axial development of annular, churn and slug flows in a long vertical tube. International Journal of Multiphase Flow, 57, pp. 38-48. (doi: 10.1016/j.ijmultiphaseflow.2013.06.008)

Abstract

Experimental data are presented on the axial development of gas–liquid flows in a 42-m long, 0.048-m ID tube system. Different transitional models for slug, churn and annular flow regimes were compared with visual observations and showed reasonable agreement for locations L/D = 560 and 820. The behavior of liquid holdup and frequency of flow structures (large waves, disturbance waves) were also analyzed for three different axial positions (L/D = 102, 521 and 815), over a range of pressure between 1.4 and 5.2 bar, liquid mass fluxes ranging from 17 to 319 kg/m2-s and dimensionless gas velocities from 0.05 to 1.6. The liquid holdup showed significant axial variation at all monitoring locations for higher liquid mass fluxes, while it appeared that a kind of developed flow was reached at L/D = 521 for lower liquid mass fluxes. The flow structure frequency did not exhibit significant axial variation for dimensionless gas velocities (Wallis parameter) between 0.2 and 1.6.

• Item Type: Articles

Additional Information

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 of Gas Fields: Mechanisms, Prediction and Reservoir Response’’ at Texas A&M
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• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Falcone, Professor Gioia
• Authors: Waltrich, P. J., Falcone, G., and Barbosa, J. R.
• College/School: College of Science and Engineering > School of Engineering > Systems Power and Energy
• Journal Name: International Journal of Multiphase Flow
• Publisher: Elsevier
• ISSN: 0301-9322
• ISSN (Online): 1879-3533
• Published Online: 16 July 2013