ABSTRACT
We study the two-dimensional low-Reynolds number flow of suspensions of deformable particles including liquid drops and gas bubbles with constant surface tension, and capsules enclosed by elastic membranes. The investigations are based on large-scale numerical simulations conducted by boundary-integral methods. In the parametric studies, we vary the drop to suspended fluid viscosity ratio, the capillary number expressing the particle deformability, and the number of simulated particles per computational box. The results illustrate the macroscopic rheological properties of a suspension regarded as a continuum, the evolution of the suspended phase microstructure, and the apparent random motion of the individual particles.
