NUMERICAL SIMULATION ON INTERMESHING COUNTER-ROTATING TWIN SCREW EXTRUDER WITH PIN-BARREL

摘要

The 3-D isothermal non-Newtonian flow field of intermeshing counter-rotating twin screw extruder with pin-barrel was researched. The pressure field, viscosity field and shear rate field were attained and analyzed. Statistic analysis are applied on the dynamic flow field simulation of intermeshing counter-rotating twin screw extruder with pin-barrel and without pin. Based on the above simulation, statistic methods have been introduced to calculate the RTD and max shear rate distribution. The results have showed intermeshing counter-rotating twin screw extruder with pin-barrel provides better distributive mixing than intermeshing counter-rotating twin screw extruder without pin.