Optimization and Numerical Simulation of Outlet of Twin Screw Extruder

Continuous Granulation with a Twin-Screw Extruder

Fluid flow aspects of twin-screw extruder process: numerical simulations of TSE rheomixing

This paper presents a brief review of the twin-screw extruder (TSE) process, analyses the fluid flow aspects of a new application of TSE in rheomixing casting, and simulates fundamental micro-mechanisms of the rheological behaviour of metallurgical alloys. The TSE is widely used as a mixing tool in the polymer industry. The numerical simulation of the TSE process is complex and there are only f...

Simulation of Distributive and Dispersive Mixing in a Co-rotating Twin-screw Extruder

Simulation results for mixing of two different polymers in a co-rotating twin-screw extruder are presented. Velocity distribution predicted by a threedimensional simulation of the flow is used to predict the change in the spatial distribution of initially segregated particles as well as the reduction in radius due to erosion. The predicted particle distribution is used to estimate the increase ...

Simulation of Polymeric Flow in a Twin-screw Extruder: an Analysis of Elongational Viscosity Effects

Flow of a polymer in an intermeshing co-rotating twin-screw extruder is simulated. Effect of elongational viscosity on the flow is analyzed using independent powerlaw models for the shear and elongational viscosities. Axial component of the velocity is found to be maximum in the intermeshing region of the extruder. Axial component of velocity, which determines the throughput of the extruder, de...

Wet granulation in a twin-screw extruder: implications of screw design.

Wet granulation in twin-screw extrusion machinery is an attractive technology for the continuous processing of pharmaceuticals. The performance of this machinery is integrally tied to its screw design yet little fundamental knowledge exists in this emerging field for granulation to intelligently create, troubleshoot, and scale-up such processes. This study endeavored to systematically examine t...