Stability analysis of a bubble column |
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| Affiliation: | 1. Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;2. University of Chinese Academy of Sciences, Beijing, 100049, China;3. University of Oulu, FIN-90014 Oulu, Finland;1. Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G 2V4, Canada;2. Department of Mathematics & Statistics, University of Melbourne, Parkville, Victoria 3010, Australia;3. Department of Chemistry and Biotechnology, Swinburne University of Technology, Parkville, Victoria 3122, Australia |
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| Abstract: | The aim of the paper is to study the transition between homogeneous and heterogeneous flows in bubble columns, by taking into account the destabilizing effects of both added mass force and deformation of the bubbles. The transition is expressed in terms of instability of a uniform bubbly flow. Special attention is paid to closure relations involving pressure terms at the gas–liquid interface. The models presented in this paper give instructive information on the transition between homogeneous and heterogeneous flows in bubble columns, highlighting the respective weight of physical phenomena, modeled in terms of closure relations introduced in the two-fluid model. |
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