Document Type : Research Paper


Chemical Engineering Dept., University of Technology-Iraq, Alsina’a Street,10066 Baghdad, Iraq.


Airlift reactors are seen as the most promising reactor for many valuable productions such as algae culturing. However, this kind of reactor still needs more information and data to understand its phenomena due to limited studies. Also, to reduce the time and offers obtained with sufficient reactor design, capable of achieving high productivities, Computational Fluid Dynamics (CFD) could play an important role in optimizing the reactor design by analyzing the interaction of hydro-dynamics. This review presents the literature review on the recent CFD work for such a reactor that addressed the fluid dynamics parameters, such as bubble dynamics. Earlier researches find more reports utilizing uniform bubble diameter in CFD simulations. However, the latest research in the CFD modeling of multi-phase flow reactors showed that the description of the bubble has significant effects on the performance of the simulation. As a result, systematic research into the impact of bubble diameter on the simulation results of the CFD was performed. Finally, we present and discuss the CFD modeling approaches, a Governing equation such as Eulerian-Eulerian (E-E), and closure such as the drag force.

Graphical Abstract


  • Many CFD models for Air-lift reactors are reviewed.
  • Flow regime, bubble properties, and hydrodynamics characteristics are covered.
  • Available closure correlations are investigated


Main Subjects

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