  The interaction potential between two colloidal particles typically spans a
few nanometers. Hence the correct appraisal of the potential in simulations
requires very short time steps. However, it is often possible to combine one
many-particle calculation with several two-particle simulations in order to
estimate a set of aggregation rates. As in the theory of Fuchs, this procedure
combines the evaluation of the fastest flocculation rate with the calculation
of several stability ratios. This methodology was already tested in systems
which exhibit low repulsive barriers for primary minimum flocculation. In this
article, the procedure is modified in order to calculate an average rate for
secondary minimum flocculation. The technique is then used to estimate the
influence of drop deformation on the aggregation rate of hexadecane-in-water
nano-emulsions stabilized with sodium dodecylsulfate (SDS).
