Numerical study on the interaction of two bubbles rising side-by-side in viscous liquids
| Autor: | Eajf Frank Peters, Gaopan Kong, H. Mirsandi, J.A.M. Kuipers, M.W. Baltussen, Kay A. Buist |
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| Přispěvatelé: | Multi-scale Modelling of Multi-phase Flows, EIRES Eng. for Sustainable Energy Systems, EAISI High Tech Systems, EIRES Chem. for Sustainable Energy Systems |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
General Chemical Engineering
Bubble 02 engineering and technology Numerical simulation Viscous liquid 010402 general chemistry 01 natural sciences Industrial and Manufacturing Engineering Physics::Fluid Dynamics symbols.namesake Bubble interaction Environmental Chemistry Bubble formation Physics Reynolds number General Chemistry Mechanics Vorticity 021001 nanoscience & nanotechnology Vortex shedding 0104 chemical sciences Vortex Bubble rising symbols Local Front Reconstruction Method Liquid bubble 0210 nano-technology Body orifice |
| Zdroj: | Chemical Engineering Journal, 410:128257. Elsevier |
| ISSN: | 1385-8947 |
| Popis: | The hydrodynamic interaction of two bubbles released from submerged orifices was simulated using a 3D front-tracking type technique called the Local Front Reconstruction Method (LFRM). The effects of fluid properties and orifice spacing on the bubble trajectory, the interaction between two bubbles, and the vortex shedding pattern were investigated. Different types of interaction behaviors, which were observed in experiments by Kong et al. (2019), could be replicated by varying the liquid viscosity. The simulation results revealed that bubbles at low Reynolds number repel each other because the diffusion of vorticity at the bubble surface is blocked and becomes asymmetric due to the presence of a neighboring bubble. In contrast, at medium and high Reynolds numbers, the bubbles attract each other after their detachment from the orifices, and their subsequent possible bouncing depends on the orifice spacing. The bubble pair will feature a zigzagging motion while rising when double-threaded vortices are generated behind the bubble. |
| Databáze: | OpenAIRE |
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