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Measurement of the film thickness, film velocity and entrainment fraction in a liquid-air annular flow using a conductance flowmeter

Al-Yarubi, Qahtan and Lucas, Gary (2008) Measurement of the film thickness, film velocity and entrainment fraction in a liquid-air annular flow using a conductance flowmeter. In: Proceedings of Computing and Engineering Annual Researchers' Conference 2008: CEARC’08. University of Huddersfield, Huddersfield, pp. 63-68. ISBN 978-1-86218-067-3

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    Abstract

    In certain older oil wells in the Middle East, the produced fluid is predominantly natural gas which flows at very high rates (e.g. 50,000). Smaller quantities of crude oil (e.g. 50) and water (950) are also produced. Given the relatively much higher flow rate of the gas the flow regime is annular with most of the liquid flowing in a thin film on the pipe wall. The annular flow regime makes measurement of the total liquid flow rate difficult. It is even more difficult to measure the individual flow rate of either the oil or the water. In a vertical Perspex pipe (i.d. = 50 mm) using a newly-designed flow loop in the University of Huddersfield, annular flow was established and different measurements were carried out. At the first stage, only water-air annular flow was being used to investigate the possible measurement techniques to achieve the aim of this study. The techniques in this study include the use of conductivity probes to measure the liquid film thickness and to obtain the film velocity using the cross-correlation technique. The obtained results were compared to previous work by Zabaras and Dukler [1] for the same pipe diameter. The results of the present work have shown a good agreement with Zabaras and Dukler’s work which indicates the success of the new measurement techniques.

    Item Type: Book Chapter
    Uncontrolled Keywords: Annular flow, multiphase flow, liquid film extraction, conductance probe and cross-correlation
    Subjects: T Technology > T Technology (General)
    Schools: School of Computing and Engineering
    School of Computing and Engineering > Computing and Engineering Annual Researchers' Conference (CEARC)
    School of Computing and Engineering > Systems Engineering Research Group
    School of Computing and Engineering > High Performance Computing Research Group
    Related URLs:
    Depositing User: Gary Lucas
    Date Deposited: 19 Mar 2009 15:58
    Last Modified: 16 Dec 2010 09:21
    URI: http://eprints.hud.ac.uk/id/eprint/3681

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