ABSTRACT
When two particles having diameters Dpi and Dpj collide, the number of collisions per unit time per unit volume can be written as
N K D D n ni j i j5 p p,( ) (8.1)
where ni and nj are the number concentrations of particles i and j, respectively, and K(Dpi, Dpj) is the coagulation rate function or the collision rate between particles of diameters Dpi and Dpj.
