A comprehensive review is presented of the physical behavior of yield stress materials in
soft condensed matter, which encompasses a broad range of materials from colloidal …

We review thixotropy, its attributes, and accompanying rheological phenomena, such as
yielding, hysteresis in shear-rate ramps, the influence of rest time and viscosity bifurcation …

The physics above and below the yield stress is unified by a simple model for viscoplasticity
that accounts for the nonlinear rheology of multiple yield stress fluids. The model has a rate …

Large amplitude oscillatory shear (LAOS) is used as a tool to probe the nonlinear
rheological response of a model elasto-viscoplastic material (a Carbopol microgel). In …

Time-and rate-dependent material functions in non-Newtonian fluids in response to different
deformation fields pose a challenge in integrating different constitutive models into …

Guided by a series of discriminating rheometric tests, we develop a new constitutive model
that can quantitatively predict the key rheological features of waxy crude oils. We first …

Numerical simulations of viscoplastic fluid flows have provided a better understanding of
fundamental properties of yield stress fluids in many applications relevant to natural and …

In this work, we introduce a comprehensive machine-learning algorithm, namely, a
multifidelity neural network (MFNN) architecture for data-driven constitutive metamodeling of …

Yield stress fluid flows occur in a great many operations and unit processes within the oil
and gas industry. This paper reviews this usage within reservoir flows of heavy oil, drilling …

The influence of the solvent type on the rheological properties of Carbopol® NF 980
dispersions in water and in water/glycerol solutions is investigated. The material formulation …