Upward gas–liquid two-phase flow after a U-bend in a large-diameter serpentine pipe

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dc.contributor.authorAliyu, A. M.
dc.contributor.authorAlmabrok, Almabrok Abushanaf
dc.contributor.authorBaba, Yahaya D.
dc.contributor.authorLao, Liyun
dc.contributor.authorYeung, Hoi
dc.contributor.authorKim, Kyung Chun
dc.date.accessioned2017-01-04T12:58:33Z
dc.date.available2017-01-04T12:58:33Z
dc.date.issued2017-01-02
dc.description.abstractWe present an experimental study on the flow behaviour of gas and liquid in the upward section of a vertical pipe system with an internal diameter of 101.6 mm and a serpentine geometry. The experimental matrix consists of superficial gas and liquid velocities in ranges of 0.15–30 m/s and from 0.07 to 1.5 m/s, respectively, which cover bubbly to annular flow. The effects on the flow behaviours downstream of the 180° return bend are significantly reduced when the flow reaches an axial distance of 47 pipe diameters from the U-bend. Therefore, reasonably developed flow is attained at this development length downstream of the bend. Other published measurements for large-diameter film thickness show similar trends with respect to the superficial gas velocity. However, the trends differ from those of small-diameter pipes, with which the film thickness decreases much faster with increasing gas flow. As a result, only a few of the published correlations for small pipe data agreed with the experimental data for large pipe film thickness. We therefore modified one of the best-performing correlations, which produced a better fit. Qualitative and statistical analyses show that the new correlation provides improved predictions for two-phase flow film thickness in large-diameter pipes.en_UK
dc.identifier.citationAliyu AM, Almabrok AA, Baba YD, et al., (2017) Upward gas–liquid two-phase flow after a U-bend in a large-diameter serpentine pipe. International Journal of Heat and Mass Transfer, Volume 108, Part A, May 2017, pp. 784-800en_UK
dc.identifier.issn0017-9310
dc.identifier.urihttp://dx.doi.org/10.1016/j.ijheatmasstransfer.2016.12.069
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/11209
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectConductance film probesen_UK
dc.subjectLarge diameter pipesen_UK
dc.subjectMultiphase flowen_UK
dc.subjectReturn bendsen_UK
dc.subjectWire mesh sensoren_UK
dc.titleUpward gas–liquid two-phase flow after a U-bend in a large-diameter serpentine pipeen_UK
dc.typeArticleen_UK

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