CERES > School of Water, Energy and Environment (SWEE) > Staff publications (SWEE) >

Please use this identifier to cite or link to this item: http://dspace.lib.cranfield.ac.uk/handle/1826/12483

Document Type: Article
Title: Void fraction development in gas-liquid flow after a U-bend in a vertically upwards serpentine-configuration large-diameter pipe
Authors: Almabrok, Almabrok A.
Aliyu, Aliyu M.
Baba, Yahaya D.
Lao, Liyun
Yeung, Hoi
Issue Date: 1-Aug-2017
Citation: Almabrok AA, Aliyu MA, Baba YD, Lao L, Yeung H, Void fraction development in gas-liquid flow after a U-bend in a vertically upwards serpentine-configuration large-diameter pipe, Heat and Mass Transfer, Available online 1 August 2017
Abstract: We 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.
URI: http://dx.doi.org/10.1007/s00231-017-2118-0
http://dspace.lib.cranfield.ac.uk/handle/1826/12483
Appears in Collections:Staff publications (SWEE)

Files in This Item:

File Description SizeFormat
CERES_embargo_text-2017.pdf85.56 kBAdobe PDFView/Open

SFX Query

Items in CERES are protected by copyright, with all rights reserved, unless otherwise indicated.