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  4. The influence of surface roughness and adhesion on particle rolling
 
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The influence of surface roughness and adhesion on particle rolling
File(s)
1-s2.0-S0032591017300992-main.pdf (1.13 MB)
Published version
Author(s)
Wilson, R
Dini, D
van Wachem, B
Type
Journal Article
Abstract
The influence of surface roughness and contact adhesion on the rolling behaviour of dry particles has been investigated. Rough particle surfaces are approximated using an array of spheres, the properties of which are informed by random processes. An analytical model has been derived by considering the torques that a particle experiences. Two mechanisms of rolling resistance are explored – a stationary particle experiencing a tangential force, and a dynamically rolling particle. The analytical model is found to agree well with simulations of the equivalent system using the discrete element model. Adhesive forces are found to increase rolling resistance in all cases. The complex consequences of varying the height variance and length scale of the surface roughness are reproduced accurately by the analytical model.
Date Issued
2017-02-01
Date Acceptance
2017-01-28
Citation
Powder Technology, 2017, 312, pp.321-333
URI
http://hdl.handle.net/10044/1/48182
DOI
https://www.dx.doi.org/10.1016/j.powtec.2017.01.080
ISSN
0032-5910
Publisher
Elsevier
Start Page
321
End Page
333
Journal / Book Title
Powder Technology
Volume
312
Copyright Statement
© 2017 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license
(https://creativecommons.org/licenses/by/4.0/).
Sponsor
Engineering and Physical Sciences Research Council
Engineering & Physical Science Research Council (EPSRC)
Grant Number
EP/G036888/1
EP/N025954/1
Subjects
Science & Technology
Technology
Engineering, Chemical
Engineering
Rolling resistance
Discrete element model
Surface roughness
Adhesion
VAN-DER-WAALS
NONSPHERICAL PARTICLES
ELASTIC CONTACT
RIGID PLANE
FRICTION
MODEL
SPHERES
FLOW
SIMULATION
FORCES
Chemical Engineering
0904 Chemical Engineering
0913 Mechanical Engineering
Publication Status
Published
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