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Measurement of Reference Bubble Velocity Vector for a Local 4 Sensor Probe Using Orthogonal High Speed Cameras

Pradhan, Suman, Lucas, Gary and Zhao, X. (2007) Measurement of Reference Bubble Velocity Vector for a Local 4 Sensor Probe Using Orthogonal High Speed Cameras. In: Proceedings of Computing and Engineering Annual Researchers' Conference 2007: CEARC’07. University of Huddersfield, Huddersfield, pp. 1-6.

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    Abstract

    In recent years, there has been an increase in the level of interest shown in making flow rate measurements in multiphase flow. This in part has been brought about by the metering requirements of the oil and natural gas industries. Measuring the volumetric flow rate of each of the flowing components is often required and this is particularly true in production logging applications, where it may be necessary to measure the flow rates of oil and water down hole in vertical and inclined oil wells. Within the University of Huddersfield, work has been undertaken on the study of vertical and inclined multiphase flow. Previous work was based on the use of local, dual-sensor conductance probes to obtain the local axial velocity and volume fraction of the bubbles in multiphase flows. The purpose of this research presented in this paper is to investigate the accuracy with which a 4-sensor probe can measure bubble velocity vectors using two orthogonal high speed cameras.

    The probe was manufactured from 0.3mm diameter stainless steel acupuncture needles due to their high level of rigidity. The acupuncture needles were mounted inside a stainless steel tube with an outer diameter of 4mm. A procedure was carried out whereby where all the readings are taken simultaneously from both the cameras and 4-sensor probe. The camera and DAQ setting are made such they were controlled by an external trigger signal that is achieved thought the same circuit that is been used for the probe signal. The velocity vector of the top plane, centre of gravity (COG) and bottom plane of the bubbles were measured using the high speed cameras and compared with the bubble velocity vector obtained from the probe signal. In this paper bubble velocity vector is quantified in term of a polar angle α an azimuthal angle β and a velocity magnitude.

    Item Type: Book Chapter
    Subjects: T Technology > T Technology (General)
    T Technology > TA Engineering (General). Civil engineering (General)
    Q Science > QC Physics
    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: Graham Stone
    Date Deposited: 02 Apr 2009 17:04
    Last Modified: 16 Dec 2010 09:31
    URI: http://eprints.hud.ac.uk/id/eprint/3780

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