Ten Years Using Discontinuous Galerkin Methods for Polymer Processing Problems
The numerical simulation of polymer processing problems requires important computer ressources making essential the development of very efficient numerical techniques. Among the difficulties, the viscoelastic nature of polymers is the most important. Nonlinear multi-mode differential models exist to describe their behaviour, but their hyperbolic (convective) nature makes numerical simulations quite difficult. The presence of free surfaces in problems such as injection molding process, extrusion die swell, coextrusion, etc. further enhance the complexity.
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