Does somebody know how to simulate a multiphase flow (with particles) in COMSOL Multiphysics

I am trying to simulate a 2 phase microfluidic system in which in the aqueous phase there are particles suspended (in fact they are cells, but let us describe them as solid particles). To simulate the droplet formation, I use the Laminar Flow and Phase field modules and the results are pretty close to the real ones (size, morphology and frequency of the droplets are in high accordance with the experimental outputs.