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Two studies in process modelling: Injection moulding and resin film infusion. (English) Zbl 0857.76007

Summary: We discuss two problems from important areas of process modelling, namely injection moulding and resin film infusion. The first comes from the food-processing sector, and involves the filling of tubs with liquid foodstuffs. The approach taken here is computational, with the foodstuffs modelled as incompressible viscous (Newtonian or non-Newtonian) fluids. In practice, the liquids have multiple free surfaces; the correct treatment of these surfaces is a crucial element of the modelling herein.
Resin film infusion is one of the preferred processes for the manufacture of composite materials. In essence it involves squeezing a viscous incompressible fluid into a woven carbon-fibre matrix. With the matrix treated as a porous medium, and with exothermic reactions (and consequent thermal effects) neglected, simple analytical results are obtainable which can be verified by straightforward engineering experiments.

MSC:

76A05 Non-Newtonian fluids
76D99 Incompressible viscous fluids
76S05 Flows in porous media; filtration; seepage
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