Journal
CHEMICAL ENGINEERING RESEARCH & DESIGN
Volume 194, Issue -, Pages 829-841Publisher
ELSEVIER
DOI: 10.1016/j.cherd.2023.05.0220263-8762
Keywords
Turbulent mixing; Stirred tank mixers; Flow pattern characterization; Mixing time prediction; Network-of-zones model
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A general methodology for characterising stirred tank mixers using two-dimensional network-of-zones (2-D NoZ) model was introduced in this work. Starting from high resolution 3-D velocity field database such as CFD simulations, flow patterns were preserved and simplified into 2-D inter-zonal flowrates and mass imbalances were corrected in the defined routine. Mixing time estimation and turbulent dissipation rate profiles were chosen as metrics for evaluation of the generated 2-D NoZ model, which were compared to CFD passive scalar and literature results on two typical stirred tank geometries covering both radial flow and axial flow impellers.
A general methodology for characterising stirred tank mixers using two-dimensional network-of-zones (2-D NoZ) model was introduced in this work. Starting from high re-solution 3-D velocity field database such as CFD simulations, flow patterns were preserved and simplified into 2-D inter-zonal flowrates and mass imbalances were corrected in the defined routine. Mixing time estimation and turbulent dissipation rate profiles were chosen as metrics for evaluation of the generated 2-D NoZ model, which were compared to CFD passive scalar and literature results on two typical stirred tank geometries covering both radial flow and axial flow impellers. & COPY; 2023 Institution of Chemical Engineers. Published by Elsevier Ltd. All rights reserved.
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