This talk is about the rheological behaviour of non-colloidal suspensions. There are applications (for example injection moulding modelling) where a better suspension model than a simple generalized Newtonian fluid would be useful, and here we report progress in this direction.In order to construct models one needs a set of experimental data. For the simplest kind of suspensions, rigid spheres of equal size in a Newtonian matrix, we now have data on:(i) Steady shear viscosity.(ii) Normal stress differences- N1 and…

We study the rheology of a non-colloidal suspension of rigid spherical particles interacting with a viscoelastic matrix. Three-dimensional numerical simulations under shear flow are performed using the smoothed particle hydrodynamics method and compared with experimental data available in the literature using different constant-viscosity elastic Boger fluids. The rheological properties of the Boger matrices are matched in simulation under viscometric flow conditions. Suspension rheology under dilute to semi-concen…

A red blood cell (RBC) in a microfluidic channel is highly interesting for scientists in various fields of research on biological systems. This system has been studied extensively by empirical, analytical, and numerical methods. Nonetheless, research of predicting the behavior of an RBC in a microchannel is still an interesting area. The complications arise from deformation of an RBC and interactions among the surrounding fluid, wall, and RBCs. In this study, a pressure-driven RBC in a microchannel was simulated w…