The archetypal feature of a viscoplastic fluid is its yield stress: If the material is not sufficiently
stressed, it behaves like a solid, but once the yield stress is exceeded, the material flows like …

Viscoplasticity is characterized by a yield stress, below which the materials will not deform
and above which they will deform and flow according to different constitutive relations …

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 …

Shapes and paths of an air bubble rising inside a liquid are investigated experimentally.
About three hundred experiments are conducted in order to generate a phase plot in the …

We are surrounded in everyday life by yield stress fluids: materials that behave as solids
under small stresses but flow like liquids beyond a critical stress. For example, paint must …

Some authors, in the last decades, have observed the dual effect of viscosity on gas holdup
and flow regime transition in small-diameter and small-scale bubble columns. This work …

Recent years have seen a flurry of research on yield stress fluids, approached from different
perspectives (physicochemical, rheological and fluid mechanical), considering different …

The sedimentation of a single particle in materials that exhibit simultaneously elastic,
viscous and plastic behavior is examined in an effort to explain phenomena that contradict …

To describe the macroscopic rheological behavior of thixotropic elasto-visco-plastic (TEVP)
materials, phenomena that take place in their microstructure must be accounted for. To this …

Yield-stress liquids are materials that are solid below a critical applied stress and flow like
mobile liquids at higher stresses. Classical descriptions of yield-stress liquids, which have …