Hello DrAmine,

You mentioned that deposition on the wall is due to settling and drag efffect, and I have run some simulations to model this effect, but the problem is, the number of particles is not decreasing as a result of settling and drag, and the mass yet still conserved. I have combined PBM to model both the aggreagtion and depostion of sized particles. The objective is for the particles to exit the flow, attach themselves onto the walls and come to inertia. You also mentioned that there is no deposition kernel yet on fluent, but can a UDF mechanism be compiled?