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A note on the numerical treatment of the thermally developing flow in screw extruders
Author(s) -
Elbirli B.,
Lindt J. T.
Publication year - 1984
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760240706
Subject(s) - materials science , flow (mathematics) , mechanics , mechanical engineering , composite material , engineering drawing , engineering , physics
This paper proposes a new solution for the problem of thermally developing flow in a single‐screw extruder with power law fluids. It is shown that a transformation to a Lagrangean frame enables one to extend the solution to extrusion situations where appreciable “pressure back flow” exists. The utility of the model is demonstrated using a polystyrene melt as a model fluid.