Coupled dynamics of flow, microstructure, and conductivity in sheared suspensions
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Kamrin_Coupled dynamics.pdf
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2.78 MB
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Author(s)
Olsen, Tyler John
Helal, Ahmed H.
McKinley, Gareth H
Kamrin, Kenneth N
Date Issued
August 2016
Journal
Soft Matter
Publisher
Royal Society of Chemistry
Citation
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.
Version
Final published version
Abstract
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.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Terms of Use
Creative Commons Attribution-NonCommercial 3.0 Unported
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1039/c6sm01199c
