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Stress and strain rate analysis of the FT4 Powder Rheometer

Hare, Colin and Ghadiri, M (2017) Stress and strain rate analysis of the FT4 Powder Rheometer In: Powders and Grains 2017 – 8th International Conference on Micromechanics on Granular Media, Web conference.

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Abstract

The Freeman FT4 Powder Rheometer has been reported to describe well the powder flow behaviour in instances where other techniques fail. We use DEM to simulate the FT4 operation for slightly cohesive large glass beads at a range of strain rates. The curved impeller is shown to be beneficial in comparison to a flat blade as the variation of shear stress across the blade is reduced. The shear stress in front of the blade correlates well with flow energy (which the device measures) for a range of tip speeds and is shown to increase approximately linearly with tip speed when operating beyond the quasi-static regime.

Item Type: Conference or Workshop Item (Conference Paper)
Divisions : Faculty of Engineering and Physical Sciences > Chemical and Process Engineering
Authors :
NameEmailORCID
Hare, Colinc.hare@surrey.ac.ukUNSPECIFIED
Ghadiri, MUNSPECIFIEDUNSPECIFIED
Date : 30 June 2017
Copyright Disclaimer : © The Authors, published by EDP Sciences, 2017. This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Depositing User : Melanie Hughes
Date Deposited : 30 Jun 2017 11:51
Last Modified : 30 Jun 2017 11:51
URI: http://epubs.surrey.ac.uk/id/eprint/841532

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