Analyzing the Viscous Dissipation of a Two-Dimensional Flow of Non-Newtonian Fluids in Single Screw Extruders
Sprache des Vortragstitels:
ANTEC Anaheim 2017
Sprache des Tagungstitel:
For modeling the flow of non-Newtonian polymer melts in single screw extruders numerical methods are required in general. In this study the viscous dissipation and the conveying characteristics in the melt channel of single screw extruders are analyzed for a two-dimensional, fully developed flow of power law fluids. Therefore three different numerical methods are presented and the results are compared. Furthermore, a comprehensive parametric design study is shown, analyzing the viscous dissipation depending on three independent parameters: (i) pitch to diameter ratio, (ii) power law exponent, and (iii) dimensionless pressure gradient. The derived results for the viscous dissipation can be used to calculate the mean melt temperature profile more precisely.