Using the DEM-CFD method to predict Brownian particle deposition in a constricted tube

- One-way computational coupling between CFD and DEM models appeared most suitable.
- Deposited particle numbers were correlated with flow rate, particle concentration and size.
- Scouring and impact mechanisms were identified as sources of particle re-suspension.
- Cluster rolling mechanism was described.
- Deposition number variability was linked to cluster re-suspension.