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Transient peristaltic transport of grains in a liquid

Marconati, Marco, Raut, S, Charkhi, F, Burbidge, A, Engmann, J and Ramaioli, Marco (2017) Transient peristaltic transport of grains in a liquid In: Powders and Grains 2017 – 8th International Conference on Micromechanics on Granular Media, 03-07 Jul 2017, Montpellier, France.

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Pumping suspensions and pastes has always been a significant technological challenge in a number of industrial applications ranging from food processing to mining. Peristaltic pumps have become popular to pump and/or dose complex fluids, due to their robustness. During the transport of suspensions with peristaltic pumps, clogging issues may arise, particularly during transient operations. That is a matter of particular concern whenever the pumping device is used intermittently to generate flow only on demand. Further understanding of the transient dynamics of such systems and of the conditions that can lead to jamming would result in more robust peristaltic pump design. To achieve these goals, an experimental setup that simplifies the statorrotor assembly of a peristaltic hose pump was used. In this setup, a roller transfers momentum to a liquid suspension, upon application of a constant load. The evolution of the velocity of the roller was recorded for different concentrations of mono-dispersed spheres of different diameters. The flow is found not to be strongly dependent on the dispersed particle volume fraction, if the size of the suspended phase is comparable with the hose diameter. Conversely, the flow is strongly slowed down when their size is small and the particle concentration is increased. These findings could help improving the design of peristaltic pumps by a more appropriate sizing, given the diameter of the hose and that of the particles to be transported.

Item Type: Conference or Workshop Item (Conference Paper)
Divisions : Faculty of Engineering and Physical Sciences > Chemical and Process Engineering
Authors :
Raut, S
Charkhi, F
Burbidge, A
Engmann, J
Date : 30 June 2017
DOI : 10.1051/epjconf/201714009009
Copyright Disclaimer : © The Authors, published by EDP Sciences. This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (
Related URLs :
Depositing User : Melanie Hughes
Date Deposited : 08 Sep 2017 16:34
Last Modified : 16 Jan 2019 18:56

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