Void fraction development in gas-liquid flow after a U-bend in a vertically upwards serpentine-configuration large-diameter pipe

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dc.contributor.authorAlmabrok, Almabrok Abushanaf
dc.contributor.authorAliyu, Aliyu M.
dc.contributor.authorBaba, Yahaya D.
dc.contributor.authorLao, Liyun
dc.contributor.authorYeung, Hoi
dc.date.accessioned2017-09-14T10:19:56Z
dc.date.available2017-09-14T10:19:56Z
dc.date.issued2017-08-01
dc.description.abstractWe investigate the effect of a return U-bend on flow behaviour in the vertical upward section of a large-diameter pipe. A wire mesh sensor was employed to study the void fraction distributions at axial distances of 5, 28 and 47 pipe diameters after the upstream bottom bend. The study found that, the bottom bend has considerable impacts on up-flow behaviour. In all conditions, centrifugal action causes appreciable misdistribution in the adjacent straight section. Plots from WMS measurements show that flow asymmetry significantly reduces along the axis at L/D = 47. Regime maps generated from three axial locations showed that, in addition to bubbly, intermittent and annular flows, oscillatory flow occurred particularly when gas and liquid flow rates were relatively low. At this position, mean void fractions were in agreement with those from other large-pipe studies, and comparisons were made with existing void fraction correlations. Among the correlations surveyed, drift flux-type correlations were found to give the best predictive results.en_UK
dc.identifier.citationAlmabrok AA, Aliyu MA, Baba YD,et al., (2018) Void fraction development in gas-liquid flow after a U-bend in a vertically upwards serpentine-configuration large-diameter pipe. Heat and Mass Transfer, Volume 54, Issue 1, January 2018, pp. 209-226en_UK
dc.identifier.issn0947-7411
dc.identifier.urihttp://dx.doi.org/10.1007/s00231-017-2118-0
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/12483
dc.language.isoenen_UK
dc.publisherSpringeren_UK
dc.rightsAttribution-NonCommercial 4.0 International
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/
dc.subjectGas liquid flowen_UK
dc.subjectVoid fractionen_UK
dc.subjectBend effecten_UK
dc.titleVoid fraction development in gas-liquid flow after a U-bend in a vertically upwards serpentine-configuration large-diameter pipeen_UK
dc.typeArticleen_UK

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