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- W2000365375 abstract "Bubble column reactors, used widely in industry, often have large column diameters (up to 6 m) and are operated at high superficial gas velocities (in the range of 0.1 to 0.4 ms−1) in the churn-turbulent flow regime. Experimental work on bubble column hydrodynamics is usually carried out on a scale smaller than 0.3 m, at superficial gas velocities lower than 0.25 ms−1. The extrapolation of data obtained in such laboratory scale units to the commercial scale reactors requires a systematic approach based on the understanding of the scaling principles of bubble dynamics and of the behaviour of two-phase dispersions in large scale columns. We discuss a multi-tiered approach to bubble column reactor scale up, relying on a combination of experiments, backed by Computational Fluid Dynamics (CFD) simulations for physical understanding. This approach consists of the following steps: description of single bubble morphology and rise dynamics (in this case both experiments and Volume-of-Fluid (VOF) simulations are used); modelling of bubble-bubble interactions, with experiments and VOF simulations as aids; description of behaviour of bubble swarms and the development of the proper interfacial momentum exchange relations between the bubbles and the liquid; and CFD simulations in the Eulerian framework for extrapolation of laboratory scale information to large-scale commercial reactors." @default.
- W2000365375 created "2016-06-24" @default.
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- W2000365375 date "2001-04-01" @default.
- W2000365375 modified "2023-10-16" @default.
- W2000365375 title "Scaling up Bubble Column Reactors with the Aid of CFD" @default.
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- W2000365375 doi "https://doi.org/10.1205/026387601750281815" @default.
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