University of Surrey

Test tubes in the lab Research in the ATI Dance Research

Unified size-density and size-topology relations in random packings of dry adhesive polydisperse spheres

Liu, Wenwei, Chen, Sheng, Wu, Chuan-Yu and Li, Shuiqing (2019) Unified size-density and size-topology relations in random packings of dry adhesive polydisperse spheres Physical Review E.

[img]
Preview
Text
Unified size-density and size-topology relations in random packings of dry adhesive polydisperse spheres.pdf - Accepted version Manuscript

Download (1MB) | Preview

Abstract

We study the size-density/topology relations} in random packings of dry adhesive polydisperse microspheres with Gaussian and lognormal size distributions through a geometric tessellation. We find that the dependence of the neighbour number on the centric particle size is always quasilinear, regardless of the size distribution, the size span or interparticle adhesion. The average local packing fraction as a function of normalized particle size for different size variances is well regressed on the same profile, which increases to larger values as the relative strength of adhesion decreases. The variations of the local coordination number with the particle size converge onto a single curve for all the adhesive particles, but gradually transfer to another branch for non-adhesive particles. Such adhesion induced size-density/topology relations} are interpreted theoretically with a modified geometrical "granocentric" model, where the model parameters are dependent on a single dimensionless adhesion number. Our findings, together with the modified theory, provide a more unified perspective on the substantial geometry of amorphous polydisperse systems, especially those with fairly loose structures.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Chemical and Process Engineering
Authors :
NameEmailORCID
Liu, Wenweiwenwei.liu@surrey.ac.uk
Chen, Sheng
Wu, Chuan-Yu
Li, Shuiqing
Date : 17 January 2019
Funders : Engineering and Physical Sciences Research Council (EPSRC)
Copyright Disclaimer : © 2019 American Physical Society
Related URLs :
Depositing User : Clive Harris
Date Deposited : 01 Feb 2019 13:04
Last Modified : 01 Feb 2019 13:04
URI: http://epubs.surrey.ac.uk/id/eprint/850341

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year


Information about this web site

© The University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom.
+44 (0)1483 300800