Packing-limited growth of irregular objects

Details Packing-limited growth of irregular objects Packing-limited growth of irregular objects

2002-10-09

arxiv.org/abs/cond-mat/0210212v1

Physics

Condensed Matter

Disordered Systems and Neural Networks

6 pages, 4 figures, 1 table, revtex4

Scientific paper

We study growth limited by packing for irregular objects in two dimensions. We generate packings by seeding objects randomly in time and space and allowing each object to grow until it collides with another object. The objects we consider allow us to investigate the separate effects of anisotropy and non-unit aspect ratio. By means of a connection to the decay of pore-space volume, we measure power law exponents for the object size distribution. We carry out a scaling analysis, showing that it provides an upper bound for the size distribution exponent. We find that while the details of the growth mechanism are irrelevant, the exponent is strongly shape dependent. Potential applications lie in ecological and biological environments where sessile organisms compete for limited space as they grow.

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