Figure 5: Quantification of regular cavities versus φ based on PD2.
From: Pore configuration landscape of granular crystallization
(a) PD2 for a sphere packing with a density of φ=0.73. The blue squares indicate the regions of interest used to count the number of quasi regular tetrahedral and octahedral cavities. The size of these rectangular regions are defined by birth and death associated with grain polydispersity (D±0.025 mm) around (birth, death) tetrahedral and octahedral cavities. (b) Numbers Ntetra and Nocta of quasi regular tetrahedral and octahedral cavities (normalized by the total number of cavities) versus packing density φ. (c) Proportion Ptetra=Ntetra/(Ntetra+Nocta) and Pocta=Nocta/(Ntetra+Nocta) of quasi regular tetrahedral and octahedral cavities versus packing density φ.
