Caulkin, R, Tian, W, Pasha, M et al. (2 more authors) (2015) Impact of shape representation schemes used in discrete element modelling of particle packing. Computers and Chemical Engineering, 76. 160 - 169. ISSN 0098-1354
Abstract
In different computer models, shape is represented using different methodologies, to varying degrees of precision. This paper examines two approaches to shape representation, and their effects on accuracy in the context of cylindrical particle packing. Two discrete element method (DEM) based software packages are used. A X-ray CT scan of a packed bed provides the experimental measurements for comparison. Eight sphere-composite representations of the same cylindrical pellet were tested. Two of these gave results that quantitatively follow experimental measurements. A range of factors that in theory could affect accuracy of the simulation results are examined, including edge roundedness, surface roughness and restitutional behaviour as a function of sphere-composite representations. The conclusion is that, for packing at least, matching the object's overall shape and dimensions is not enough. Only when a high enough resolution is applied to corners and edges, could the sphere-composite approach possibly match the experimental data quantitatively.
Metadata
Item Type: | Article |
---|---|
Authors/Creators: |
|
Copyright, Publisher and Additional Information: | (c) 2015 Elsevier. This is an author produced version of a paper published in Computers & Chemical Engineering. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Bulk packing fraction; Local packing fraction; Pellet orientation distribution; Sphere-composite approach; Voxel-based approach; Cylinder packing |
Dates: |
|
Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemical & Process Engineering (Leeds) > Institute for Particle Science and Engineering (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 23 Jun 2015 09:26 |
Last Modified: | 28 Jul 2017 08:34 |
Published Version: | http://dx.doi.org/10.1016/j.compchemeng.2015.02.01... |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.compchemeng.2015.02.015 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:85187 |