2008/05/31 by James Adams, J. M. Adams, Peter D. Olmsted +1 · 3 citations
Chemical Engineering · Engineering · Medicine · Physics and Astronomy · #Blood properties and coagulation #Phase Equilibria and Thermodynamics #Rheology and Fluid Dynamics Studies #cond-mat.soft
paper · pdf · doi:10.1103/physrevlett.102.067801
published as Phys. Rev. Lett. 102, 067801 (2009) · 5 figures
arxiv created 2008/12/14 · openalex publication_date 2009/02/12 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Recent experiments on entangled polymer solutions may indicate a constitutive instability, and have led some to question the validity of existing constitutive models. We use a modern constitutive model, the Rolie-Poly model plus a solvent viscosity, and show that (i) this simple class of models captures instability, (ii) shear banding phenomena is observable for weakly stable fluids in flow geometries with sufficiently inhomogeneous total stress, and (iii) transient phenomena exhibit inhomogeneities similar to shear banding, even for weakly stable fluids.