Numerical simulations have been carried out for the transient formation of Taylor bubbles in a nozzle/tube co-flow arrangement by solving the unsteady, incompressible Navier-Stokes equations. A level set method was used to track the two-phase interface. The calculated bubble size, shape, liquid film thickness, bubble length, drift velocity, pressure drop and flow fields of Taylor flow agree well with the literature data. For a given nozzle/tube configuration, the Taylor bubble formation is found to be mainly dependent on the relative magnitude of gas and liquid superficial velocity. However, even under the same liquid and gas superficial velocities, the change of nozzle geometry alone can lead to a big change in the size of Taylor bubbles and the pressure drop behavior inside a given capillary. This indicates that the widely used flow pattern map presented in terms of liquid and gas superficial velocities is not unique.
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ASME 2007 5th International Conference on Nanochannels, Microchannels, and Minichannels
June 18–20, 2007
Puebla, Mexico
Conference Sponsors:
- Nanotechnology Institute
ISBN:
0-7918-4272-X
PROCEEDINGS PAPER
Numerical Study on the Formation of Taylor Bubbles in Capillary Tubes
Yuming Chen,
Yuming Chen
University of Stuttgart, Stuttgart, Germany
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Rudi Kulenovic,
Rudi Kulenovic
University of Stuttgart, Stuttgart, Germany
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Rainer Mertz
Rainer Mertz
University of Stuttgart, Stuttgart, Germany
Search for other works by this author on:
Yuming Chen
University of Stuttgart, Stuttgart, Germany
Rudi Kulenovic
University of Stuttgart, Stuttgart, Germany
Rainer Mertz
University of Stuttgart, Stuttgart, Germany
Paper No:
ICNMM2007-30182, pp. 939-946; 8 pages
Published Online:
May 28, 2009
Citation
Chen, Y, Kulenovic, R, & Mertz, R. "Numerical Study on the Formation of Taylor Bubbles in Capillary Tubes." Proceedings of the ASME 2007 5th International Conference on Nanochannels, Microchannels, and Minichannels. ASME 5th International Conference on Nanochannels, Microchannels, and Minichannels. Puebla, Mexico. June 18–20, 2007. pp. 939-946. ASME. https://doi.org/10.1115/ICNMM2007-30182
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