Characterization of dynamics of gas-liquid flows in rectangular bubble columns
Abstract
Abstract Gas–liquid flow in bubble columns is inherently unsteady. The unsteady fluid dynamics influences mixing and other transport processes occurring in bubble column reactors. In this work, we have characterized dynamics of gas–liquid flows in rectangular bubble columns using wall pressure and voidage fluctuations. The low‐frequency oscillations caused by meandering bubble plume were characterized using the plume oscillation period. Experiments were carried out to study the influence of superficial gas velocity, sparger configuration, and liquid height‐to‐width (H/W) ratio on the low‐frequency oscillations. The dimensional analysis based on analogy between buoyancy‐driven thermal and bubbly flows was carried out to relate low‐frequency oscillations to various design and operating parameters. This analysis was able to correlate present as well as previously published experimental data. We have further demonstrated the importance of establishing such a quantitative relationship for validation of computational fluid dynamics (CFD)–based models by carrying out CFD simulations of gas–liquid flow in rectangular bubble columns. The importance of bubble‐scale information obtained using conductivity probes in validating Eulerian–Lagrangian models is also demonstrated. © 2004 American Institute of Chemical Engineers AIChE J, 50: 2394–2407, 2004
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Selma et al. [312] implemented CM and DQMOM in OpenFOAM to model polydisperse two-phase flow of a rectangular bubble column and STR; the model was validated with experimental results for the bubble column, and numerical results and experiments agree well in time-averaged axial liquid velocity and gas hold-up.
“Selma et al. [312] implemented the CM and the DQMOM in OpenFOAM ® to model the polydisperse two-phase flow of a rectangular bubble column and a stirred tank reactor (STR). The model was validated with the experimental results [158,313] for the case of the bubble column. Numerical results and experiments agree well in terms of time-averaged axial liquid velocity and gas hold-up.”
From Modeling and Simulation of Photobioreactors with Computational Fluid Dynamics—A Comprehensive Review (2022) · cites this paper as [313]
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References 26 · Cited by 61
- Authors
- Buwa, V. V., & Ranade, V. V.
- Affiliations
- National Chemical Laboratory (IN)
- Corresponding author
- Ranade, Vivek V.
- Venue
- AIChE Journal
- Publisher
- Wiley
- Published
- 2004-09-03
- Volume
- 50
- Issue
- 10
- Pages
- 2394-2407
- ISSN
- 0001-1541 (ISSN-L)
- 1547-5905
- OpenAlex
- W1988655608
- Cited by
- 61
- References
- 26
- Citations by year
- 2026: 4 · 2025: 2 · 2024: 1 · 2023: 1 · 2022: 4 · 2021: 4 · 2020: 3 · 2019: 7 · 2018: 3 · 2017: 4 · 2016: 5 · 2015: 1 · 2014: 2 · 2013: 1 · 2012: 2
- FWCI
- 1.81
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- AIChE Journal (publishedVersion)
- Topics
- Physical Sciences › Engineering › Biomedical Engineering › Fluid Dynamics and Mixing
- Physical Sciences › Environmental Science › Water Science and Technology › Minerals Flotation and Separation Techniques
- Physical Sciences › Engineering › Computational Mechanics › Granular flow and fluidized beds
- Keywords
- gas-liquid two-phase flow, low-frequency oscillations, wall pressure fluctuations, superficial gas velocity, Eulerian-Lagrangian model, conductivity probe, CFD validation, bubble column
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