In this paper we study the effects of variable viscosity and thermal conductivity on the heat transfer in the pressure-driven fully developed flow of a slurry (suspension) between two horizontal flat plates. The fluid is assumed to be described by a constitutive relation for a generalized second grade fluid where the shear viscosity is a function of the shear rate, temperature and concentration...

Recent studies of athermal systems such as dry grains and dense, non-Brownian suspensions have shown that shear can lead to solidification through the process of shear jamming in grains and discontinuous shear thickening in suspensions. The similarities observed between these two distinct phenomena suggest that the physical processes leading to shear-induced rigidity in athermal materials are u...

The viscosity of blood at high rates of shear is unusually low compared to other suspensions of similar concentration. The underlying mechanisms were studied by rotational viscometry, red cell filtration, viscometry of packed cells and direct microscopic observation of red cells under flow in a transparent cone plate viscometer. Deformability of red cells was altered osmotically or abolished by...

A model of the lattice Boltzmann method for non-Newtonian fluids was constructed. The shear stress of purely viscous but non-elastic non-Newtonian fluid is a function of shear rate only. For the power-law model, only two constant parameters can cover shear-thinning and shear-thickening fluids. Two power-law models are introduced to the finite difference lattice Boltzmann method. One is a model ...

The processing of dense suspensions is a crucial step in many industries including mining; the production ceramics; and manufacture pharmaceuticals. It widely reported that these exhibit nonlinear behaviours such as shear thinning thickening, with particle surface contacts recently being accepted primary culprit latter. In light this, modelling community have started to explore role tribology, ...

– We study the strain response to steady imposed stress in a spatially homogeneous, scalar model for shear thickening, in which the local rate of yielding Γ(l) of mesoscopic ‘elastic elements’ is not monotonic in the local strain l. Despite this, the macroscopic, steady-state flow curve (stress vs. strain rate) is monotonic. However, for a broad class of Γ(l), the response to steady stress is n...

Dilute oil dispersions of carbon black particles with attractive Van der Waals interactions display shear thickening in two distinct regimes. The first occurs at low shear rates, γ̇c1 ≈ 100s−1 along with the formation of vorticity aligned shear-induced structures. The second high shear regime with γ̇c2 ≈ 102−3s−1 is driven by hydrodynamic breakup of clusters. Pre-shearing in the high rate shear t...