Numerical simulation of residence time, shear rates and throughput in single screw extruders considering wall shear rates

An existing model to predict the dimensionless throughput-pressure relation in single screw extruders for two dimensional Non-newtonian fluids is amplified using three dimensional CFD simulations considering wall shearing. Furthermore, a new model is built up based upon the simulation results predicting shear stresses and average residence times of materials inside various geometries and for different kinds of polymers.