Premium
Investigation of the Free‐Surface Flow in Partially Filled Extruders
Author(s) -
Lübke Martin,
Wünsch Olaf
Publication year - 2013
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201310142
Subject(s) - plastics extrusion , mechanics , free surface , work (physics) , viscosity , flow (mathematics) , materials science , computation , newtonian fluid , power law fluid , volume (thermodynamics) , power (physics) , surface (topology) , non newtonian fluid , thermodynamics , composite material , mathematics , physics , geometry , algorithm
In this work we present the free‐surface flow of high viscous Newtonian liquids in a simplified extruder model, namely the flat‐plate model. Due to high density and viscosity ratios, a free‐surface approach based on the volume of fluid method is used. The material distribution for different degree of fillings and the resulting power consumption is investigated. In addition, the obtained power characteristic is compared against analytical consideration and numerical simulation of a fully filled case. The investigation shows that the power characteristic of a partially filled extruder can be estimated by a fully filled computation. (© 2013 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)