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

Fluid dynamics plays a crucial role in many cellular processes, including the locomotion of
cells such as bacteria and spermatozoa. These organisms possess flagella, slender …

We report three stages for locomotion of a helical swimmer in yield stress fluids. In the first
stage, the swimmer must overcome the material's yield strain to generate rotational motion …

Inks deposited in conventional direct ink writing need to be able to support their own weight
and that of the upper layers with minimal deformation to preserve the structural integrity of …

We use computational methods to determine the minimal yield stress required in order to
hold static a buoyant bubble in a yield-stress liquid. The static limit is governed by the …

A theoretical and numerical study of complex sliding flows of yield-stress fluids is presented.
Yield-stress fluids are known to slide over solid surfaces if the tangential stress exceeds the …

The decade following the second world war heralded the publication of a collection of
important papers on non-Newtonian fluid mechanics; Oldroyd's work featured heavily in this …

Despite many particle shapes and motion patterns that can be present in viscoplastic
settling, the scientific studies are mostly limited to spherical particles and cases in which the …

An axisymmetric squirmer in a Bingham viscoplastic fluid is studied numerically to determine
the effect of a yield stress environment on locomotion. The nonlinearity of the governing …

The literature has treated the dip coating of yield stress fluids with the Bingham number (B i=
τ c/K γ˙ n, where τ c, K, γ˙ and n are the yield stress, consistency factor, shear rate and power …