Coupled dynamics of flow, microstructure, and conductivity in sheared suspensions
We propose a model for the evolution of the conductivity tensor for a flowing suspension of electrically conductive particles. We use discrete particle numerical simulations together with a continuum physical framework to construct an evolution law for the suspension microstructure during flow. This...
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| Format: | Article |
| Language: | en_US |
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Royal Society of Chemistry
2017
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| Online Access: | http://hdl.handle.net/1721.1/107240 https://orcid.org/0000-0003-1801-7962 https://orcid.org/0000-0002-7104-9739 https://orcid.org/0000-0001-8323-2779 https://orcid.org/0000-0002-5154-9787 |
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| author | Olsen, Tyler John Helal, Ahmed H. McKinley, Gareth H Kamrin, Kenneth N |
| author2 | Massachusetts Institute of Technology. Department of Mechanical Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Mechanical Engineering Olsen, Tyler John Helal, Ahmed H. McKinley, Gareth H Kamrin, Kenneth N |
| author_sort | Olsen, Tyler John |
| collection | MIT |
| description | We propose a model for the evolution of the conductivity tensor for a flowing suspension of electrically conductive particles. We use discrete particle numerical simulations together with a continuum physical framework to construct an evolution law for the suspension microstructure during flow. This model is then coupled with a relationship between the microstructure and the electrical conductivity tensor. Certain parameters of the joint model are fit experimentally using rheo-electrical conductivity measurements of carbon black suspensions under flow over a range of shear rates. The model is applied to the case of steady shearing as well as time-varying conductivity of unsteady flow experiments. We find that the model prediction agrees closely with the measured experimental data in all cases. |
| first_indexed | 2024-09-23T15:57:52Z |
| format | Article |
| id | mit-1721.1/107240 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T15:57:52Z |
| publishDate | 2017 |
| publisher | Royal Society of Chemistry |
| record_format | dspace |
| spelling | mit-1721.1/1072402022-10-02T05:24:12Z Coupled dynamics of flow, microstructure, and conductivity in sheared suspensions Olsen, Tyler John Helal, Ahmed H. McKinley, Gareth H Kamrin, Kenneth N Massachusetts Institute of Technology. Department of Mechanical Engineering Olsen, Tyler John Helal, Ahmed H. McKinley, Gareth H Kamrin, Kenneth N We propose a model for the evolution of the conductivity tensor for a flowing suspension of electrically conductive particles. We use discrete particle numerical simulations together with a continuum physical framework to construct an evolution law for the suspension microstructure during flow. This model is then coupled with a relationship between the microstructure and the electrical conductivity tensor. Certain parameters of the joint model are fit experimentally using rheo-electrical conductivity measurements of carbon black suspensions under flow over a range of shear rates. The model is applied to the case of steady shearing as well as time-varying conductivity of unsteady flow experiments. We find that the model prediction agrees closely with the measured experimental data in all cases. United States. Dept. of Energy. Office of Basic Energy Sciences (Joint Center for Energy Storage Research (JCESR)) 2017-03-09T14:41:25Z 2017-03-09T14:41:25Z 2016-08 2016-05 Article http://purl.org/eprint/type/JournalArticle 1744-683X 1744-6848 http://hdl.handle.net/1721.1/107240 Olsen, Tyler, Ahmed Helal, Gareth H. McKinley, and Ken Kamrin. “Coupled Dynamics of Flow, Microstructure, and Conductivity in Sheared Suspensions.” Soft Matter 12, no. 36 (2016): 7688–7697. https://orcid.org/0000-0003-1801-7962 https://orcid.org/0000-0002-7104-9739 https://orcid.org/0000-0001-8323-2779 https://orcid.org/0000-0002-5154-9787 en_US http://dx.doi.org/10.1039/c6sm01199c Soft Matter Creative Commons Attribution-NonCommercial 3.0 Unported https://creativecommons.org/licenses/by-nc/3.0/ application/pdf Royal Society of Chemistry Royal Society of Chemistry |
| spellingShingle | Olsen, Tyler John Helal, Ahmed H. McKinley, Gareth H Kamrin, Kenneth N Coupled dynamics of flow, microstructure, and conductivity in sheared suspensions |
| title | Coupled dynamics of flow, microstructure, and conductivity in sheared suspensions |
| title_full | Coupled dynamics of flow, microstructure, and conductivity in sheared suspensions |
| title_fullStr | Coupled dynamics of flow, microstructure, and conductivity in sheared suspensions |
| title_full_unstemmed | Coupled dynamics of flow, microstructure, and conductivity in sheared suspensions |
| title_short | Coupled dynamics of flow, microstructure, and conductivity in sheared suspensions |
| title_sort | coupled dynamics of flow microstructure and conductivity in sheared suspensions |
| url | http://hdl.handle.net/1721.1/107240 https://orcid.org/0000-0003-1801-7962 https://orcid.org/0000-0002-7104-9739 https://orcid.org/0000-0001-8323-2779 https://orcid.org/0000-0002-5154-9787 |
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