OATAO - Open Archive Toulouse Archive Ouverte Open Access Week

Hydrodynamics of gas-liquid Taylor flow in rectangular microchannels

Abadie, Thomas and Aubin, Joelle and Legendre, Dominique and Xuereb, Catherine Hydrodynamics of gas-liquid Taylor flow in rectangular microchannels. (2012) Microfluidics and Nanofluidics, vol. 12 (n° 1-4). pp. 355-369. ISSN 1613-4982

[img]
Preview
(Document in English)

PDF (Author's version) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
11MB

Official URL: http://dx.doi.org/10.1007/s10404-011-0880-8

Abstract

The effect of fluid properties and operating conditions on the generation of gas–liquid Taylor flow in microchannels has been investigated experimentally and numerically. Visualisation experiments and 2D numerical simulations have been performed to study bubble and slug lengths, liquid film hold-up and bubble velocities. The results show that the bubble and slug lengths increase as a function of the gas and liquid flow rate ratios. The bubble and slug lengths follow the model developed by Garstecki et al. (Lab chip 6:437-446, 2006) and van Steijn et al. (Chem Eng Sci 62:7505-7514, 2007), however, the model coefficients appear to be dependent on the liquid properties and flow conditions in some cases. The ratio of the bubble velocity to superficial two-phase velocity is close to unity, which confirms a thin liquid film under the assumption of a stagnant liquid film. Numerical simulations confirm the hypothesis of a stagnant liquid film and provide information on the thickness of the liquid film.

Item Type:Article
Additional Information:Thanks to Springer Verlag editor. The original PDF can be found at Microfluidics and Nanofluidics website: http://link.springer.com/article/10.1007%2Fs10404-011-0880-8
HAL Id:hal-00878398
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 - INPT (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Laboratory name:
Statistics:download
Deposited By: Vincent GERBAUD
Deposited On:30 Oct 2013 08:04

Repository Staff Only: item control page