Analytical approaches for calculating the pressure drop in extrusion dies are limited because they are only applicable in ideal flow channel geometries.
In finite element calculations the pressure drop in different flow channels was determined. Parallel the cross section of those geometries was calculated, transformed into the ideal form of a slit or circle and analytical calculations were done. From the results a correction function was derived. This enables realistic pressure drop calculation by applying simple analytical equations.
2. Kremer, A.: Entwicklung eines Modellansatzes zur Bestimmung des Druckverlustes in schlitzfbrmigen Fliefkanalen, unpublished student thesis at IKV, Aachen, 1993, supervisor: F. Pohler.
3.
3. N.N.: User manual MICROPUS, 1KV Aachen.
4.
4. Schtimmer, P.: Rheologie I, Grundlagen und Anwendung, RWTH Aachen, 1988.
5.
5. Dahlmeyer, P.: Experimentelle Uberprtlfung eines Modellansatzes zur Berechnung von Druckverlusten in nicht-idealen VerteilerkanIen, unpublished student thesis at IKV, Aachen, 1995, supervisor: U. Lang.
