Relationship between Average Coordination Number and Void Fraction in Randomly Packed Systems of Uniform-sized Spheres Developed by Four Kinds of Computer Simulation [Translated]†

Abstract

The relationship between the average coordination number and void fraction in a randomly packed system of uniform-sized spheres was investigated by four different kinds of computer simulated results to judge whether or not the coordination number could be uniquely estimated from the voidage. The relationship between the coordination number and voidage depends on the type of the computer simulation program used and our research results showed clearly that the coordination number cannot be uniquely estimated from the void fraction. These computer simulated results were compared with the calculated results using some empirical or model equations which have already been reported in the literature. The model equations by Gotoh and Suzuki et al. and the empirical equations by Sunada et al. and Nagao were found to be in fairly good agreement with some of our simulated results.† This report was originally printed in J. Soc. Powder Technology, Japan. 25(4), 204-208 (1988) in Japanese, before being translated into English by KONA Editorial Committee with the permission of the editorial committee of the Soc. Powder Technology, Japan.