Rheology and microstructural evolution in pressure-driven flow of a magnetorheological fluid with strong particle-wall interactions
The interaction between magnetorheological (MR) fluid particles and the walls of the device that retain the field-responsive fluid is critical as this interaction provides the means for coupling the physical device to the field-controllable properties of the fluid. This interaction is often enhanced...
| Main Authors: | , |
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| Format: | Article |
| Language: | en_US |
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Sage Publications
2013
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| Online Access: | http://hdl.handle.net/1721.1/81209 https://orcid.org/0000-0001-8323-2779 |
| _version_ | 1826191203553509376 |
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| author | Ocalan, Murat McKinley, Gareth H |
| author2 | Massachusetts Institute of Technology. Department of Mechanical Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Mechanical Engineering Ocalan, Murat McKinley, Gareth H |
| author_sort | Ocalan, Murat |
| collection | MIT |
| description | The interaction between magnetorheological (MR) fluid particles and the walls of the device that retain the field-responsive fluid is critical as this interaction provides the means for coupling the physical device to the field-controllable properties of the fluid. This interaction is often enhanced in actuators by the use of ferromagnetic walls that generate an attractive force on the particles in the field-on state. In this article, the aggregation dynamics of MR fluid particles and the evolution of the microstructure in pressure-driven flow through ferromagnetic channels are studied using custom-fabricated microfluidic devices with ferromagnetic sidewalls. The aggregation of the particles and the time-dependent evolution in the microstructure is studied in rectilinear, expansion and contraction channel geometries. These observations help identify methods for improving MR actuator design and performance. |
| first_indexed | 2024-09-23T08:52:33Z |
| format | Article |
| id | mit-1721.1/81209 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T08:52:33Z |
| publishDate | 2013 |
| publisher | Sage Publications |
| record_format | dspace |
| spelling | mit-1721.1/812092022-09-30T11:49:38Z Rheology and microstructural evolution in pressure-driven flow of a magnetorheological fluid with strong particle-wall interactions Ocalan, Murat McKinley, Gareth H Massachusetts Institute of Technology. Department of Mechanical Engineering Massachusetts Institute of Technology. Hatsopoulos Microfluids Laboratory Ocalan, Murat McKinley, Gareth H. The interaction between magnetorheological (MR) fluid particles and the walls of the device that retain the field-responsive fluid is critical as this interaction provides the means for coupling the physical device to the field-controllable properties of the fluid. This interaction is often enhanced in actuators by the use of ferromagnetic walls that generate an attractive force on the particles in the field-on state. In this article, the aggregation dynamics of MR fluid particles and the evolution of the microstructure in pressure-driven flow through ferromagnetic channels are studied using custom-fabricated microfluidic devices with ferromagnetic sidewalls. The aggregation of the particles and the time-dependent evolution in the microstructure is studied in rectilinear, expansion and contraction channel geometries. These observations help identify methods for improving MR actuator design and performance. Schlumberger-Doll Research Center Massachusetts Institute of Technology. Hatsopoulos Microfluids Laboratory 2013-09-26T20:47:42Z 2013-09-26T20:47:42Z 2012-01 Article http://purl.org/eprint/type/JournalArticle 1045-389X 1530-8138 http://hdl.handle.net/1721.1/81209 Ocalan, M., and G. H. McKinley. Rheology and Microstructural Evolution in Pressure-driven Flow of a Magnetorheological Fluid with Strong Particle-wall Interactions. Journal of Intelligent Material Systems and Structures 23, no. 9 (June 20, 2012): 969-978. https://orcid.org/0000-0001-8323-2779 en_US http://dx.doi.org/10.1177/1045389x11429601 Journal of Intelligent Material Systems and Structures Creative Commons Attribution-Noncommercial-Share Alike 3.0 http://creativecommons.org/licenses/by-nc-sa/3.0/ application/pdf Sage Publications MIT web domain |
| spellingShingle | Ocalan, Murat McKinley, Gareth H Rheology and microstructural evolution in pressure-driven flow of a magnetorheological fluid with strong particle-wall interactions |
| title | Rheology and microstructural evolution in pressure-driven flow of a magnetorheological fluid with strong particle-wall interactions |
| title_full | Rheology and microstructural evolution in pressure-driven flow of a magnetorheological fluid with strong particle-wall interactions |
| title_fullStr | Rheology and microstructural evolution in pressure-driven flow of a magnetorheological fluid with strong particle-wall interactions |
| title_full_unstemmed | Rheology and microstructural evolution in pressure-driven flow of a magnetorheological fluid with strong particle-wall interactions |
| title_short | Rheology and microstructural evolution in pressure-driven flow of a magnetorheological fluid with strong particle-wall interactions |
| title_sort | rheology and microstructural evolution in pressure driven flow of a magnetorheological fluid with strong particle wall interactions |
| url | http://hdl.handle.net/1721.1/81209 https://orcid.org/0000-0001-8323-2779 |
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