Study on the characteristic of axial circular flow field in co-rotating twin screw extrusion

Document Type

Conference Proceeding

Publication Date

10-14-2003

Abstract

In order to improve the mixing ability and elongate the mean residence time in twin-screw extruders, the axial circular flow was introduced in this study. A non-intermeshing section was set in the co-rotating twin-screw extruder, in which one screw was equipped with reverse conveying elements and the other with forward conveying elements. In the current work, a three-dimensional simulation of the flow in the axial circular flow section was developed by FEM package, ANSYS. Based on the calculated pressure and velocity profile, the pressure-throughput behavior and mixing ability of the axial circular flow section were discussed. Compared with the conventional conveying elements, the circular flow section has reduced ability to conveying but its distributive mixing capability was largely increased. Visualization experiments showed that the simulation results were in good agreement with the experimental outcomes.

Identifier

0141841633 (Scopus)

Publication Title

Annual Technical Conference ANTEC Conference Proceedings

First Page

142

Last Page

146

Volume

1

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