Behavior of cohesive powder in rotating drums

M. Wojtkowski, O.I. Imole, M. Ramaioli, E. Chávez Montes, S. Luding

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

4 Citations (Scopus)

Abstract

We present experimental findings on the flowability and avalanching behavior of cohesive powders in a rotating drum. The main goal – beyond the scope of the current study – is to develop a method to understand and predict phenomena that precede the occurrences of events like avalanches and then to simulate this with the Discrete Element Method. In the present study, we focus on the characterization, classification, and description of the various events possible in cohesive powders – other than in non-cohesive particle systems – during rotation in a drum. Events are categorized based on their nature and we speculate on their relation to the micro-structure and properties of the powder. As main result, we show that repeatable and consistent results can be obtained in the characterization of cohesive powders when angle–based (e.g. local surface and global center-of-mass) parameters are used. Different events can be distinguished, especially for strong cohesion, bulk shear sliding is often replaced by other events like slumping.
Original languageEnglish
Title of host publicationPowders and Grains 2013
Subtitle of host publicationProceedings of the 7th International Conference on Micromechanics of Granular Media
EditorsAibing Yu, Kejun Dong, Runyu Yang, Stefan Luding
PublisherAIP Publishing LLC
Pages983-986
ISBN (Print)978-0-7354-1166-1
DOIs
Publication statusPublished - 8 Jul 2013
Event7th International Conference on Micromechanics of Granular Media, Powders and Grains 2013 - Sydney, Australia
Duration: 8 Jul 201312 Jul 2013
Conference number: 7
http://www.pg2013.unsw.edu.au/

Publication series

NameAIP conference proceedings
PublisherAIP Publishing LLC
Volume1542
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference7th International Conference on Micromechanics of Granular Media, Powders and Grains 2013
Abbreviated titlePowders & Grains
CountryAustralia
CitySydney
Period8/07/1312/07/13
Internet address

Keywords

  • Cohesive powders
  • Avalanches
  • Cocoa
  • Rotating drum
  • PARDEM

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