Aggregate Mass

Aggregate Mass

Figure 4.4 Dependence of the mean square radius of gyration on the aggregate mass for a collection of reaction-limited cluster aggregation mechanism (RLCA) aggregates. Here, the scaling relationship R ~ m2/Dm is verified.

This property is at odds with the ordinary concept of homogeneous density expected from the properties of porous or impermeable spheres and has important consequences for the hydrodynamic properties of fractal aggregates. Indeed, many previous studies based upon Stokes' law have incorrectly calculated aggregate densities and porosities by considering aggregates as an assembly of permeable or impermeable spheres with a homogeneous distribution within the aggregate.

0 0

Post a comment