CFD simulation of internal-loop airlift reactor using EMMS drag model

- DBS drag model based on EMMS approach was used for simulating internal-loop airlift reactors.
- CFD simulation with S-N or DBS drag models were compared to published experimental data.
- The S-N drag model in commercial CFD package failed to predict gas holdup in downcomer.
- DBS drag model greatly improved gas holdup prediction in downcomer and riser.