Many-body hydrodynamic interactions between spherical drops in an emulsion

A previously developed scheme to calculate hydrodynamic interactions between an arbitrary number of hard spheres in suspension is generalized to the case that the speheres consist of liquid drops. If the viscosity of the liquid in the drops tends to infinity one recovers the results for hard spheres with stick boundary conditions. Zero viscosity within the drops corresponds to hard sphere hydrodynamic interactions with slip boundary conditions.