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Mass transfer characteristics and concentration field evolution for gas-liquid Taylor flow in milli channels

Abiev, R.Sh. and Butler, Colin and Cid, Emmanuel and Lalanne, Benjamin and Billet, Anne-Marie Mass transfer characteristics and concentration field evolution for gas-liquid Taylor flow in milli channels. (2019) Chemical Engineering Science, 207. 1331-1340. ISSN 0009-2509

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Official URL: https://doi.org/10.1016/j.ces.2019.07.046


The results of the recent experimental work performed by Butler et al. (2016, 2018) are analysed based on the dominant phenomena: (i) small scale convection by means of Taylor vortices in the liquid slugs and (ii) diffusion in lubrication film. A main result shown here is that the Taylor circulation frequency is able to reflect the global mass transfer rate in gas-liquid Taylor flow through an almost linear relationship, which emphasizes the interest of the circulating motion in the slug, and gives a very simple correlation to predict the kLa value (at large Schmidt number). A mechanism of flow behavior during the bubble formation at the T-mixer is proposed as a possible explanation of unexpected concentration areas (called “islands”). However, despite of these unusual concentration field structures in these cases, the mass transfer rate coefficient kLa is still accurately predicted by the Taylor circulation frequency in the slug.

Item Type:Article
HAL Id:hal-02270667
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Institut National des Sciences Appliquées de Toulouse - INSA (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Other partners > Saint Petersburg State University - SPBU (RUSSIA)
Laboratory name:
Deposited On:26 Aug 2019 09:04

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