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Spatial Correlations of two dimensional packings

Research Field
Physics
Resource Type
Storage
Compute
Resource Class
C
Code
HPC_11_00180
Abstract
We investigate next nearest neighbor correlations of the contact number in simulations of polydis- perse, frictionless, packings in two dimensions. We find that discs with few contacting neighbors are predominantly in contact with discs that have many neighbors and vice versa at all packing fractions. This counter-intuitive result can be explained by drawing a direct analogy to the Aboav-Weaire law in cellular structures. We find an empirical one parameter relation similar to the Aboav-Weaire law that satisfies an exact sum rule constraint. Surprisingly, there are no correlations in the radii between neighboring particles, despite correlations between contact number and radius.
Duration
12.00months
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