Young modulus ( 𝑝𝑔 • µ𝑚 - The rotation speed of the twin-screw is a difficult parameter to determine, as it has a complex influence on the dynamics of the entire system. A high rotation speed shortens the residence time inside the screws and increases the number of revolutions performed during a simulation. In the experiment of Boudeville et al. , they used 50 rpm to keep the efficiency of their laboratory scale extruder, and this low rotation speed can ensure the polymer chains do not break. However, the reduction of geometry in our modeling approach requires us to find a suitable rotation speed and shear modulus of particles to achieve dynamic similarity with the physical experiments. The first option is to keep the action of the forces applied to the particles as similar as in the experiment.