Extrudate swell of a high-density polyethylene melt: II. Modeling using integral and differential constitutive equations
Keywords: Extrudate swell; Capillary flow; K-BKZ model; Phan-Thien Tanner (PTT) model; Papanastasiou-Scriven-Macosko (PSM) damping function; Integral and differential constitutive equations;