PackGeo Module

The PackGeo module

PackGeo generates dense random sphere packings, where the sphere diameter distribution is variable.

In PackGeo two different algorithms are used:

  1. Force Biased:
    The spheres, which have a repulsive force between each other, are packed denser and denser (Figure 1). High packing densities are achieved. The packing density, which naturally has an upper limit, is variable. This algorithm can be used, e.g. to determine the maximal packing density for a given sphere diameter distribution.

  2. Piling:
    The spheres fall down under the influence of gravity and form a dense sphere-pile (Figure 2). The packing density is a result of this process and hence not variable. This algorithm is fast and a large number of spheres can be packed.

Figure 1: Model of a sphere packing created with the GadGeo module Figure 2: Model of a pile of spheres created with the GadGeo module }

Material properties can be calculated directly on the geometry models, using other GeoDict modules (e.g. PoroDict, ConductoDict, FlowDict, ElastoDict, DiffuDict or FilterDict), for exmaples:

  • pore-size distribution.
  • flow resistivity (permeability, pressure drop).
  • effective thermal and electrical conductivity.
  • effective elasticity.
  • effective diffusion.
  • filter efficiency.
  • filter capacity.
  • and many more.