The simulated viscosity values depend on the particle-size based LJ and GH FFs of the model. The LJ parameters are used to describe the repulsion-attraction interparticle forces, tuning mainly the average distance between two distinct particles. The GH forces affect only the normal and tangential forces between two particles only when they overlap. As the diameter of the CBD decreases in microstructures with higher SC, there is a higher potential for the SE and AM particles to overlap which introduces more forces and thereby higher viscosity. However, there is no significant difference between the viscosity values of AM1 and AM2 which could be attributed to the low wt. % in the slurry composition.