Biroun, MH;
Sorensen, E;
Hilden, JL;
Mazzei, L;
(2023)
CFD modelling of powder flow in a continuous horizontal mixer.
Powder Technology
, 428
, Article 118843. 10.1016/j.powtec.2023.118843.
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Abstract
This work presents a continuum model for simulating the flow of powders inside continuous horizontal mixers. The challenge is to adopt a reliable rheological model that allows simulating granular flows accurately. We selected the μ(I)-rheology model. First, we considered a set of granular collapse experiments, showing that the model can successfully reproduce these flows, and also using the experimental results to evaluate the material properties of the powders. Then, we investigated the complex powder flow in continuous horizontal mixers. Here computational cost is a challenge. We showed that the sliding mesh technique is accurate but expensive owing to the rotation of the boundaries, making this method impractical for industrial applications. Therefore, we also employed the multiple reference frame technique, showing that its results are accurate at far lower computational cost. The results section ends with a sensitivity analysis of the mixer solid mass loading to the powder material properties.
Type: | Article |
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Title: | CFD modelling of powder flow in a continuous horizontal mixer |
Open access status: | An open access version is available from UCL Discovery |
DOI: | 10.1016/j.powtec.2023.118843 |
Publisher version: | https://doi.org/10.1016/j.powtec.2023.118843 |
Language: | English |
Additional information: | Copyright © 2023 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
Keywords: | CFD, Multiple reference frame, Sliding mesh, Granular flow, μ(I)-rheology model, Material properties, Continuous horizontal mixer |
UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering |
URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10175340 |
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