The phase distribution of upward co-current bubbly flows in a vertical square channel
In this work one shows experimental data and numerical results of the void fraction distribution in vertical upward air-water bubbly flows in a square cross-section channel. To measure the void fraction distribution one used a single wire conductive probe. The averaged void fraction ranged from 3.3% to 15%; the liquid and the gas superficial velocities varied from 0.9 m/s to 3.0 m/s and 0.04 m/s to 0.5 m/s, respectively. The experimental results for the void fraction distribution were compared with numerical calculation performed by an Eulerian-Eulerian implementation of the Two-Fluid Model. In this work one performs the turbulence modeling with three approaches: using an algebraic model, the k-epsilon two-phase model and the k-epsilon two-phase two-layer model. Comparisons between the experimental and numerical data revealed, in general, good agreement.
| Main Authors: | , , |
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| Format: | Digital revista |
| Language: | English |
| Published: |
Associação Brasileira de Engenharia e Ciências Mecânicas - ABCM
2004
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| Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1678-58782004000300007 |
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