The microfluidic flow is typically laminar due to the dominant viscous effects. At Reynolds
numbers far below 1 (Re≪ 1), the fluid inertia can be neglected. For the steady flow of …

A review of the different coextrusion processes and the related processing problems is
presented. A one-dimensional bilayer coextrusion Poiseuille flow model is first developed …

The stability of polymer melt shear flows is explored using the recently proposed eXtended
Pom–Pom (XPP) model of Verbeeten et al.[J. Rheol. 45 (2001) 823]. We show that both the …

A new streamfunction/log-conformation formulation of incompressible viscoelastic flows is
presented. The log-conformation representation guaranties the positive-definiteness of the …

Multilayer coextrusion is a process in which polymers are extruded and joined together in a
feedblock or die to form a single structure with multiple layers. These layers normally should …

Purely viscous and purely elastic interfacial instabilities as well as the layer encapsulation
phenomena in superposed pressure-driven channel flow of well characterized Newtonian …

In this study, we have elucidated the molecular origin of shear banding in the entangled
polymeric melts. Specifically, it is shown that the inflection point corresponding to the stress …

Bicomponent fibers were melt spun to investigate the effect of individual component viscosity
on the cross section morphology. Two couples were tested, polypropylene MFI 18 (PP 18) …

We present analytic solutions for steady flow of the Johnson–Segalman (JS) model with a
diffusion term in various geometries and under controlled strain rate conditions, using …

We have performed hi-fidelity dissipative particle dynamics (DPD) simulations of shear flow
of polymeric melts in a broad range of system sizes and two entanglement densities to …