Flow Generated by an Aerated Rushton Impeller: Two-phase PIV Experiments and Numerical Simulations
Abstract
Abstract A two‐camera PIV technique was used to obtain angle resolved velocity and turbulence data of the flow in a lab‐scale stirred tank, equipped with a Rushton turbine. Two cases were investigated: a single‐phase flow and a gas‐liquid flow. In the former case, the classical radial jet flow pattern accompanied by two trailing vortices was observed. In the latter case, the velocity of the radial jet was reduced, and the vortices were diminished by the presence of the gas. Gas cavities clinging to the back of the impeller blades were observed. Both cases were also investigated with the use of three‐dimensional transient CFD simulations. For the single‐phase flow the simulations in the impeller region correspond very well with the experimental data. For the gas‐liquid flow both the mean and fluctuating liquid velocities in the impeller region are well predicted. This is also the case for the mean radial gas velocities.
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EQMOM implemented in OpenFOAM for two stirred tank reactors yields numerical results agreeing very well with experimental data of Deen et al. in axial and radial liquid velocity profiles, and fairly well in evolution of dissolved oxygen concentration.
“Their numerical results agree very well with the experimental data of Deen et al. [331] in terms of axial and radial liquid velocity profiles, and fairly well with their experimental outcomes in terms of the evolution of dissolved oxygen concentration.”
From Modeling and Simulation of Photobioreactors with Computational Fluid Dynamics—A Comprehensive Review (2022) · cites this paper as [331]
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- Authors
- Deen, N. G., Solberg, T., & Hjertager, B. H.
- Affiliations
- Aalborg University (DK)
- Corresponding author
- Deen, Niels G.
- Venue
- The Canadian Journal of Chemical Engineering
- Publisher
- Wiley
- Published
- 2002-08
- Volume
- 80
- Issue
- 4
- Pages
- 1-15
- ISSN
- 0008-4034 (ISSN-L)
- 1939-019X
- OpenAlex
- W2111650206
- Cited by
- 112
- References
- 42
- Citations by year
- 2026: 2 · 2025: 3 · 2024: 1 · 2023: 7 · 2022: 6 · 2021: 7 · 2020: 8 · 2019: 5 · 2018: 3 · 2017: 6 · 2016: 6 · 2015: 4 · 2014: 4 · 2013: 2 · 2012: 6
- FWCI
- 1.49
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- The Canadian Journal of Chemical Engineering (publishedVersion)
- University of Twente Research Information (publishedVersion)
- VBN Forskningsportal (Aalborg Universitet) (submittedVersion)
- University of Twente Research Information (submittedVersion)
- Topics
- Physical Sciences › Engineering › Biomedical Engineering › Fluid Dynamics and Mixing
- Physical Sciences › Engineering › Computational Mechanics › Fluid Dynamics and Turbulent Flows
- Physical Sciences › Engineering › Mechanics of Materials › Cavitation Phenomena in Pumps
- Keywords
- Rushton turbine, gas-liquid two-phase flow, wake vortices, gas cavities, impeller wake, turbulent flow, two-phase flow, 3D CFD simulation
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