Shear Banding from lattice kinetic models with competing interactions

TL;DR

This paper uses a lattice kinetic model with competing interactions to simulate and analyze shear banding and rheological behaviors in soft-glassy materials, providing insights into their flow properties under confinement.

Contribution

It introduces a Boltzmann kinetic lattice model that successfully reproduces key rheological features like shear banding and Herschel-Bulkley behavior in soft-glassy materials.

Findings

Reproduces shear-banding phenomena in simulations

Captures Herschel-Bulkley rheology signatures

Validates the model as a tool for studying confined soft-glassy flows

Abstract

Soft Glassy Materials, Non Linear Rheology, Lattice Kinetic models, frustrated phase separation} We present numerical simulations based on a Boltzmann kinetic model with competing interactions, aimed at characterizating the rheological properties of soft-glassy materials. The lattice kinetic model is shown to reproduce typical signatures of driven soft-glassy flows in confined geometries, such as Herschel-Bulkley rheology, shear-banding and histeresys. This lends further credit to the present lattice kinetic model as a valuable tool for the theoretical/computational investigation of the rheology of driven soft-glassy materials under confinement.