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CFD simulation of the hydrodynamics in an internal air-lift reactor with two different configurations |
Mona EBRAHIMIFAKHAR1, Elmira MOHSENZADEH1, Sadegh MORADI1( ), Mostafa MORAVEJI1, Mahmoud SALIMI2 |
| 1. Department of Chemical Engineering, Faculty of Engineering, Arak University, Arak 38156-8-8849, Iran; 2. Department of Chemical Engineering, Islamic Azad University, Arak Branch, Arak, Iran |
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Abstract Computational fluid dynamics (CFD) was used to investigate the hydrodynamic parameters of two internal airlift bioreactors with different configurations. Both had a riser diameter of 0.1 m. The model was used to predict the effect of the reactor geometry on the reactor hydrodynamics. Water was utilized as the continuous phase and air in the form of bubbles was applied as the dispersed phase. A two-phase flow model provided by the bubbly flow application mode was employed in this project. In the liquid phase, the turbulence can be described using the k-? model. Simulated gas holdup and liquid circulation velocity results were compared with experimental data. The predictions of the simulation are in good agreement with the experimental data.
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| Keywords
airlift reactor
gas holdup
liquid circulation velocity
bubbly flow
computational fluid dynamics (CFD)
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Corresponding Author(s):
MORADI Sadegh,Email:s-morady@araku.ac.ir
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Issue Date: 05 December 2011
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