Non--Newtonian viscosity of interacting Brownian particles: comparison of theory and data

Abstract

A recent first-principles approach to the non-linear rheology of dense colloidal suspensions is evaluated and compared to simulation results of sheared systems close to their glass transitions. The predicted scenario of a universal transition of the structural dynamics between yielding of glasses and non-Newtonian (shear-thinning) fluid flow appears well obeyed, and calculations within simplified models rationalize the data over variations in shear rate and viscosity of up to 3 decades.

6 pages, 2 figures; J. Phys. Condens. Matter to be published (Jan. 2003)

References in corpus (1)

• Nonequilibrium dynamics and fluctuation-dissipation relation in a sheared fluid

Cited by in corpus (10)

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• Theory and simulation of gelation, arrest and yielding in attracting colloids
• Flow curves of dense colloidal dispersions: schematic model analysis of the shear-dependent viscosity near the colloidal glass transition
• Flow curves of colloidal dispersions close to the glass transition: Asymptotic scaling laws in a schematic model of mode coupling theory
• The Role of Collective Elasticity on Activated Structural Relaxation, Yielding and Steady State Flow in Hard Sphere Fluids and Colloidal Suspensions Under Strong Deformation
• Fluid-Glass-Jamming Rheology of Soft Active Brownian Particles