Abstract

LE GRANGE, L. A.; GREYVENSTEIN, G. P.; DE KOCK, W. J.  and  MEYER, J. P.. A numerical model for solving polymer melt flow. R&D j. (Matieland, Online) [online]. 1993, vol.9, pp.12-17. ISSN 2309-8988.

A finite volume numerical method is presented for the prediction of unsteady, incompressible polymer melt flow. Most other researchers use finite element methods in numerical models simulating polymer melt flow. The continuity, momentum and energy equations are considered in terms of general curvilinear coordinates. A generalised Newtonian model is used to model the non-Newtonian viscosity which, in the present case, is a function of the deformation of the flow field and of temperature. The method may be used to obtain valuable information about the flow properties during the filling stage of the injection-moulding process. The method is tested by comparing the pressure drop versus volumetric flow rate for a case of the filling of a thin mould cavity with available computational data.

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