The effect of probability of coalescence on the evolution of bubble sizes in a turbulent pipeline flow: A numerical study |
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| Authors: | Miguel Miura Oleg Vinogradov |
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| Affiliation: | 1. Department of Electrical and Computer Engineering, LOOP (Laboratoire d''Observation et d''Optimisation des Procédés), Université Laval, Pavillon Pouliot, Québec City G1V 0A6, Canada;2. Department of Mining, Metallurgical and Materials Engineering, LOOP (Laboratoire d''Observation et d''Optimisation des Procédés), Université Laval, Pavillon Pouliot, Québec City G1V 0A6, Canada;3. Department of Metallurgical Engineering, University of Santiago, Chile |
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| Abstract: | A population balance method in which continuum and discrete phases are integrated is developed to simulate the evolution of polydisperse population of bubbles in a turbulent pipeline flow. The investigation is focused on the effect of the coalescence efficiency on this evolution. A dilute system of bubbles under microgravity conditions is considered. It is found that if the initial coalescence efficiency is low, a slight increase produces a significant effect on the bubble coalescence rate, and thus on the evolution of the population. If, however, the initial coalescence efficiency is high, its increase results in a marginal effect on the way the population evolves. The results of simulations are validated against experimental data on the population mean. |
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