Codice 18/2010 Titolo Modelling and numerical simulation of the polymeric extrusion process in textile products Data 2010-06-07 Autore/i Antonietti, P.F.; Fadel, N.A.; Verani, M. Link Download full text Abstract We present the mathematical modelling and the numerical simulation of the polymer extrusion process of hollow and non-hollow yarns. In particular, the polymeric material flow has been modelled as non-Newtonian, incompressible, isothermal and steady. We attempt to develop a possible strategy for effective die design in profile extrusion and we numerically asses the validity of the model on both academic and real industrial test cases. Keywords:Free boundary flow, Die-swell, Hollow yarn. 2000 Mathematics Subject Classification. 76D07, 35Q30.