Application of CFD-DEM to the study of solid exchange in a dual-leg fluidized bed

- Solid exchange in a dual-leg fluidized bed was studied with CFD-DEM model.
- The simulated particle flow patterns are similar to the experimental data.
- Two dominant frequencies exist in PSD results.
- Higher fluidization velocity results in more intensive particles exchange between the two half beds.
- Cluster exchange frequency decreases with an increase of the bed inventory.