Rice, HP orcid.org/0000-0002-6895-8325, Pilgrim, JL, Fairweather, M et al. (3 more authors) (2020) Extending acoustic in‐line pipe rheometry and friction factor modelling to low‐Reynolds‐number, non‐Newtonian slurries. AIChE Journal, 66 (8). e16268. ISSN 0001-1541
Abstract
The rheology of non‐Newtonian slurries are measured in a recirculating pipe loop using an acoustic velocimetry‐pressure drop technique at very low flow rates and variable solids loadings. The technique avoids (a) settling at low solids concentration, a shortcoming of bench rheometry, by using a vertical test section, and (b) physical sampling, providing greater safety. Speed of sound in the suspensions is also modelled. In‐line and off‐line data are used to assess the suitability of several non‐Newtonian models to describe observed flow behaviour. Measured and predicted values of the friction factor are compared, with the Madlener et al. (2009) Herschel‐Bulkley Extended model found to be superior. The dependence of yield stress and viscosity on solids loading and particle size is investigated, showing complexities from aggregation on the particle size distribution require more interpretation than the choice of rheological or friction‐factor model.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2020 The Authors. AIChE Journal published by Wiley Periodicals, Inc. on behalf of American Institute of Chemical Engineers. This is an open access article under the terms of the Creative Commons Attribution 4.0 International (CC BY 4.0) (https://creativecommons.org/licenses/by/4.0/) |
Keywords: | Doppler velocimetry, in‐line rheometry; multiphase flow; pipe flow; acoustic methods |
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) The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Mechanical Engineering (Leeds) > Institute of Engineering Systems and Design (iESD) (Leeds) The University of Leeds > Faculty of Environment (Leeds) > School of Earth and Environment (Leeds) > Institute for Applied Geosciences (IAG) (Leeds) |
Funding Information: | Funder Grant number EPSRC (Engineering and Physical Sciences Research Council) EP/L014041/1 |
Depositing User: | Symplectic Publications |
Date Deposited: | 18 May 2020 13:56 |
Last Modified: | 21 Jun 2022 19:53 |
Status: | Published |
Publisher: | Wiley |
Identification Number: | 10.1002/aic.16268 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:160841 |