Numerical simulation of bi-disperse polymer flow in complex geometries using Rolie–Double–Poly model within OpenFOAM software
Modeling the behavior of bi-disperse, linearly entangled polymers blends using the Rolie–Double–Poly constitutive equation is essential for understanding the reliability of the model in simulating complex flow behaviors. This study examines the extensional response of polymer blends, particularly the stretching of chains under pure extensional flow along the centre-line in two flow geometries: hyperbolic contraction flow and cross-slot flow with hyperbolic corners. Coupled and uncoupled models were implemented within the OpenFOAM software via the RheoTool toolbox wher