A Numerical Approach for Polymer Flow Predictions in Two-dimensional Geometries, Involving Crystallization Processes
This paper presents results of non-isothermal fluid flow simulations performed by
means of the Stream Tube Method, using finite-element and finite-difference techniques for
the energy and crystallization problems. Flows in confined geometries (converging duct,
domain with restricting sections), related to injection processes are considered. Different
constitutive equations: Newtonian, non-Newtonian Carreau and memory-integral Wagner
models, are adopted in the calculations. The numerical predictions highlight differences in
behaviour for the fluids investigated. Results on the flow-induced crystallization are presented
in the Newtonian case and underline different features dependent on the characteristics of the
geometry under consideration.
Adel CHINE, Amine AMMAR, Magdeleine NORMANDIN, Jean-Robert CLERMONT
Reçu le 1 janvier 2007.
Accepté le 1 septembre 2007.
Injection, Crystallization, Non-isothermal Flows, Stream-Tube Method, Memory-Integral Model, Non-Newtonian Simulations.