ABSTRACT
This chapter presents the principles that govern the behavior of suspensions of deformable particles. It describes some of the basic equations that govern fluid motion and the stress in a flowing suspension. The chapter also describes the motion of nonspherical and deformable particles in a flow. It discusses motion of nonspherical and deformable particles in a flow. Once the yield stress of blood is exceeded, the shear-thinning and plateau behavior are attributable to the combination of aggregation and the deformability of the Red blood cells (RBCs) under flow. RBCs and indeed all deformable particles migrate away from walls during shear due to hydrodynamic interaction effects with the walls. In addition, if there is a spatial variation in the velocity gradient, as arises in pressure-driven flow, there is an additional migration effect that arises for deformable particles in the Stokes flow regime.
