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Hydrodynamics of Taylor flow in small channels: a review

Angeli, P; Gavriilidis, A; (2008) Hydrodynamics of Taylor flow in small channels: a review. PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE , 222 (5) 737 - 751.

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Abstract

The improved mass transfer characteristics of Taylor flow, make it an attractive flow pattern for carrying out gas-liquid operations in microchannels. Mass transfer characteristics are affected by the hydrodynamic properties of the flow such as thickness of the liquid film that surrounds the bubbles, bubble velocity, bubble and slug lengths, mixing, and flow circulation in the liquid slugs, and pressure drop. Experimental, theoretical, and modelling attempts to predict these properties are reviewed and relevant correlations are given. Most of these refer to capillaries but there are number of studies on square channels. In general, flow properties are well understood and predicted for fully formed Taylor bubbles in a developed flow and in clean systems, particularly in circular channels. However, the presence of impurities and their effect on interfacial tension cannot be fully accounted for. In addition, there is still uncertainty on the size of bubbles and slugs that form under certain operating and inlet conditions, while there is little information for channels with non-circular cross-sections.

Type: Article
Title: Hydrodynamics of Taylor flow in small channels: a review
Location: Univ Strathclyde, Glasgow, SCOTLAND
Keywords: gas-liquid flow, Taylor flow, film thickness, bubble length, slug length, microchannels, SQUARE CROSS-SECTION, BUBBLE-TRAIN FLOW, LIQUID 2-PHASE FLOW, PRESSURE-DROP, VISCOUS-FLUID, LONG BUBBLES, GAS-BUBBLES, NEWTONIAN LIQUID, CAPILLARY TUBES, FINITE-ELEMENT
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering
URI: http://discovery.ucl.ac.uk/id/eprint/129534
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