Albaraki, S, Antony, SJ and Arowosola, CB (2013) Visualising shear stress distribution inside flow geometries containing pharmaceutical powder excipients using photo stress analysis tomography and DEM simulations. In: Powders and Grains 2013: Proceedings of the 7th International Conference on Micromechanics of Granular Media. Powders and Grains 2013, 08-12 Jul 2013, Sydney, Australia. American Institute of Physics (AIP) , 706 - 709. ISBN 9780735411661
Abstract
For the first time, photo stress analysis tomography (PSAT) is applied to probe the distribution of maximum shear stress and direction of major principal stress field within 'powder' assemblies inside hopper geometries, and further supported by discrete element model (DEM) simulations. The results show that for decrease in hopper angle, the direction of major principle stress aligns with the direction of gravity which could promote flow rate under dynamic conditions. Conversely, the propensity of developing relatively more non-homogeneous distribution of shear resistance zones inside powder assemblies increases with the hopper angle, which could subsequently decrease their macroscopic flow rate.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2013 AIP Publishing LLC. This is an author produced version of a paper published in Proceedings of the 7th International Conference on Micromechanics of Granular Media. Uploaded in accordance with the publisher's self-archiving policy |
Keywords: | discrete element modelling (DEM); granular flow; particulate processes; Photonic stress analysis tomography (PSAT); powders; tomography; flow visualization |
Dates: |
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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: | 17 Oct 2014 11:00 |
Last Modified: | 19 Dec 2022 13:28 |
Published Version: | http://dx.doi.org/10.1063/1.4812029 |
Status: | Published |
Publisher: | American Institute of Physics (AIP) |
Identification Number: | 10.1063/1.4812029 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:80467 |