An analytical model was developed to predict the critical conditions at the onset of gas entrainment in a single downward oriented branch. The branch was installed on a horizontal square cross-sectional channel having a smooth stratified co-currently flowing gas-liquid regime in the upstream inlet region. The branch flow was simulated as a three-dimensional point-sink while the downstream run flow was treated with a uniform velocity at the critical dip location. A boundary condition was imposed in the model whereby the flow distribution between the branch and run was obtained experimentally and digital imaging was used to quantify the critical dip location through the dip angle. Three constant dip angles were evaluated in the model and results showed the dip height to have good agreement with experiments between angles of 50 and 60 degrees. The predicted upstream height, however, did not match well with the experimentally determined height due to the omission of shear and inertial effects between the upstream location and critical dip.
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ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting collocated with 8th International Conference on Nanochannels, Microchannels, and Minichannels
August 1–5, 2010
Montreal, Quebec, Canada
Conference Sponsors:
- Fluids Engineering Division
ISBN:
978-0-7918-4948-4
PROCEEDINGS PAPER
A Hybrid Model for Predicting Gas Entrainment in a Small Branch From a Co-Current Flowing Gas-Liquid Regime
Robert Bowden,
Robert Bowden
Concordia University, Montreal, QC, Canada
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Wael Saleh,
Wael Saleh
Concordia University, Montreal, QC, Canada
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Ibrahim Hassan
Ibrahim Hassan
Concordia University, Montreal, QC, Canada
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Robert Bowden
Concordia University, Montreal, QC, Canada
Wael Saleh
Concordia University, Montreal, QC, Canada
Ibrahim Hassan
Concordia University, Montreal, QC, Canada
Paper No:
FEDSM-ICNMM2010-31174, pp. 1363-1371; 9 pages
Published Online:
March 1, 2011
Citation
Bowden, R, Saleh, W, & Hassan, I. "A Hybrid Model for Predicting Gas Entrainment in a Small Branch From a Co-Current Flowing Gas-Liquid Regime." Proceedings of the ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting collocated with 8th International Conference on Nanochannels, Microchannels, and Minichannels. ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting: Volume 1, Symposia – Parts A, B, and C. Montreal, Quebec, Canada. August 1–5, 2010. pp. 1363-1371. ASME. https://doi.org/10.1115/FEDSM-ICNMM2010-31174
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