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ChemEngineering 2018, 2(3), 39; https://doi.org/10.3390/chemengineering2030039

Euler–Lagrange Modeling of Bubbles Formation in Supersaturated Water

Chemical Process Intensification, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, 5612AE Eindhoven, The Netherlands
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Received: 3 May 2018 / Revised: 15 August 2018 / Accepted: 22 August 2018 / Published: 24 August 2018
(This article belongs to the Special Issue Bubble Column Fluid Dynamics)
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Abstract

Phase transition, and more specifically bubble formation, plays an important role in many industrial applications, where bubbles are formed as a consequence of reaction such as in electrolytic processes or fermentation. Predictive tools, such as numerical models, are thus required to study, design or optimize these processes. This paper aims at providing a meso-scale modelling description of gas–liquid bubbly flows including heterogeneous bubble nucleation using a Discrete Bubble Model (DBM), which tracks each bubble individually and which has been extended to include phase transition. The model is able to initialize gas pockets (as spherical bubbles) representing randomly generated conical nucleation sites, which can host, grow and detach a bubble. To demonstrate its capabilities, the model was used to study the formation of bubbles on a surface as a result of supersaturation. A higher supersaturation results in a faster rate of nucleation, which means more bubbles in the column. A clear depletion effect could be observed during the initial growth of the bubbles, due to insufficient mixing. View Full-Text
Keywords: CFD; Euler–Lagrange; bubble column; phase transition; supersaturation CFD; Euler–Lagrange; bubble column; phase transition; supersaturation
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Battistella, A.; Aelen, S.S.C.; Roghair, I.; van Sint Annaland, M. Euler–Lagrange Modeling of Bubbles Formation in Supersaturated Water. ChemEngineering 2018, 2, 39.

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