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Microfluidic Rheometry and Particle Settling: Characterizing the Effect of Polymer Solution Elasticity
Polymers, Volume: 14, Issue: 4, Start page: 657
Swansea University Author: Francesco Del Giudice
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Copyright: © 2022 by the authors. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license
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DOI (Published version): 10.3390/polym14040657
Abstract
The efficient transport of solid particles using polymeric fluids is an important step in many industrial operations. Different viscoelastic fluids have been designed for this purpose, however, the effects of elasticity have not been fully integrated in examining the particle-carrying capacity of th...
Published in: | Polymers |
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ISSN: | 2073-4360 |
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MDPI AG
2022
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URI: | https://cronfa.swan.ac.uk/Record/cronfa60734 |
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2022-08-17T10:36:24.2071412 v2 60734 2022-08-04 Microfluidic Rheometry and Particle Settling: Characterizing the Effect of Polymer Solution Elasticity 742d483071479b44d7888e16166b1309 0000-0002-9414-6937 Francesco Del Giudice Francesco Del Giudice true false 2022-08-04 CHEG The efficient transport of solid particles using polymeric fluids is an important step in many industrial operations. Different viscoelastic fluids have been designed for this purpose, however, the effects of elasticity have not been fully integrated in examining the particle-carrying capacity of the fluids. In this work, two elastic fluid formulations were employed to experimentally clarify the effect of elasticity on the particle drag coefficient as a proxy model for measuring carrying capacity. Fluids were designed to have a constant shear viscosity within a specific range of shear rates, γ˙<50(1/s), while possessing distinct (longest) relaxation times to investigate the influence of elasticity. It is shown that for dilute polymeric solutions, microfluidic rheometry must be practiced to obtain a reliable relaxation time (as one of the measures of viscoelasticity), which is on the order of milliseconds. A calibrated experimental setup, furnished with two advanced particle velocity measurement techniques and spheres with different characteristics, was used to quantify the effect of elasticity on the drag coefficient. These experiments led to a unique dataset in moderate levels of Weissenberg numbers, 0<Wi<8.5. The data showed that there is a subtle reduction in the drag coefficient at low levels of elasticity (Wi<1), and a considerable enhancement at high levels of elasticity (Wi>1). The experimental results were then compared with direct numerical simulation predictions yielding R2=0.982. These evaluations endorse the numerically quantified behaviors for the drag coefficient to be used to compare the particle-carrying capacity of different polymeric fluids under different flow conditions. Journal Article Polymers 14 4 657 MDPI AG 2073-4360 viscoelasticity; particle settling; dilute polymeric solutions; Oldroyd-B model; microfluidic rheometry; drag coefficient; hydraulic fracturing 9 2 2022 2022-02-09 10.3390/polym14040657 COLLEGE NANME Chemical Engineering COLLEGE CODE CHEG Swansea University Other EPSRC New Investigator Award (grant ref. no. EP/S036490/1). 2022-08-17T10:36:24.2071412 2022-08-04T16:46:19.9077001 Faculty of Science and Engineering School of Engineering and Applied Sciences - Chemical Engineering Salah A. Faroughi 0000-0002-6543-1691 1 Francesco Del Giudice 0000-0002-9414-6937 2 60734__24850__f0655589633744a69824d7fd17071b6b.pdf 60734.VOR.pdf 2022-08-04T16:52:27.9205801 Output 6320758 application/pdf Version of Record true 2022-02-09T00:00:00.0000000 Copyright: © 2022 by the authors. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license true eng https://creativecommons.org/licenses/by/4.0/ |
title |
Microfluidic Rheometry and Particle Settling: Characterizing the Effect of Polymer Solution Elasticity |
spellingShingle |
Microfluidic Rheometry and Particle Settling: Characterizing the Effect of Polymer Solution Elasticity Francesco Del Giudice |
title_short |
Microfluidic Rheometry and Particle Settling: Characterizing the Effect of Polymer Solution Elasticity |
title_full |
Microfluidic Rheometry and Particle Settling: Characterizing the Effect of Polymer Solution Elasticity |
title_fullStr |
Microfluidic Rheometry and Particle Settling: Characterizing the Effect of Polymer Solution Elasticity |
title_full_unstemmed |
Microfluidic Rheometry and Particle Settling: Characterizing the Effect of Polymer Solution Elasticity |
title_sort |
Microfluidic Rheometry and Particle Settling: Characterizing the Effect of Polymer Solution Elasticity |
author_id_str_mv |
742d483071479b44d7888e16166b1309 |
author_id_fullname_str_mv |
742d483071479b44d7888e16166b1309_***_Francesco Del Giudice |
author |
Francesco Del Giudice |
author2 |
Salah A. Faroughi Francesco Del Giudice |
format |
Journal article |
container_title |
Polymers |
container_volume |
14 |
container_issue |
4 |
container_start_page |
657 |
publishDate |
2022 |
institution |
Swansea University |
issn |
2073-4360 |
doi_str_mv |
10.3390/polym14040657 |
publisher |
MDPI AG |
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Faculty of Science and Engineering |
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Faculty of Science and Engineering |
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School of Engineering and Applied Sciences - Chemical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Chemical Engineering |
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description |
The efficient transport of solid particles using polymeric fluids is an important step in many industrial operations. Different viscoelastic fluids have been designed for this purpose, however, the effects of elasticity have not been fully integrated in examining the particle-carrying capacity of the fluids. In this work, two elastic fluid formulations were employed to experimentally clarify the effect of elasticity on the particle drag coefficient as a proxy model for measuring carrying capacity. Fluids were designed to have a constant shear viscosity within a specific range of shear rates, γ˙<50(1/s), while possessing distinct (longest) relaxation times to investigate the influence of elasticity. It is shown that for dilute polymeric solutions, microfluidic rheometry must be practiced to obtain a reliable relaxation time (as one of the measures of viscoelasticity), which is on the order of milliseconds. A calibrated experimental setup, furnished with two advanced particle velocity measurement techniques and spheres with different characteristics, was used to quantify the effect of elasticity on the drag coefficient. These experiments led to a unique dataset in moderate levels of Weissenberg numbers, 0<Wi<8.5. The data showed that there is a subtle reduction in the drag coefficient at low levels of elasticity (Wi<1), and a considerable enhancement at high levels of elasticity (Wi>1). The experimental results were then compared with direct numerical simulation predictions yielding R2=0.982. These evaluations endorse the numerically quantified behaviors for the drag coefficient to be used to compare the particle-carrying capacity of different polymeric fluids under different flow conditions. |
published_date |
2022-02-09T04:19:05Z |
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1763754267785560064 |
score |
11.016258 |