a proposed solution for the settling velocity of coplanar aggregates of identical spheres in creeping motion.

This paper derives a solution for the settling velocity of isolated coplanar aggregates of n identical spherical particles in creeping motion based on the wall shear-pressure gradient-expansion model (wpe) previously derived by the author. the solution is reached by developing geometry-equilibrium mathematical constructs to decide on the dimensions of the free ambient expansions surrounding the aggregates to compute the entire velocity profile. a rational to decide on the orientation and stability of rotation is also proposed. the results compare well with the outcome of available theory and some relevant data sets.