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Optimization of the polymer melt thickness distribution on a cable of large diameter
Author(s) -
Hanssen D. M.
Publication year - 1991
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.760311602
Subject(s) - materials science , flow (mathematics) , mechanics , isothermal process , channel (broadcasting) , newtonian fluid , crosshead , composite material , polymer , thermodynamics , computer science , telecommunications , physics , flexural strength
A numerical method for analysis of isothermal non‐Newtonian polymer melt flow in narrow channels of complex shape is described. This method is applied to the flow in a cable‐covering crosshead. The volumetric flow field is calculated and the melt thickness distribution proves to be strongly nonuniform. A series of modified cannel geometries are suggested and the volumetric flow rates in these channels are calculated. One of these channels, which gives a substantially more uniform unsulation thickness, is shown as an improved channel design.