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Open AccessArticle

The Influence of Bubbles on Foamed Cement Viscosity Using an Extended Stokesian Dynamics Approach

by Eilis Rosenbaum 1,*,†, Mehrdad Massoudi 1,2,† and Kaushik Dayal 3,4,†
1
National Energy Technology Laboratory, 626 Cochrans Mill Road, P.O. Box 10940, Pittsburgh, PA 15236, USA
2
Department of Biomedical Engineering, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, PA 15213, USA
3
Department of Civil and Environmental Engineering, Carnegie Mellon University, Pittsburgh, PA 15213, USA
4
Center for Nonlinear Analysis, Carnegie Mellon University, Pittsburgh, PA 15213, USA
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Fluids 2019, 4(3), 166; https://doi.org/10.3390/fluids4030166
Received: 7 August 2019 / Revised: 31 August 2019 / Accepted: 3 September 2019 / Published: 6 September 2019
(This article belongs to the Special Issue Recent Advances in Mechanics of Non-Newtonian Fluids)
We want to study the influence of bubbles on the viscosity of suspensions with a computational approach that also accounts for the arrangement of the bubbles due to shearing flow. This requires a large number of bubbles to properly simulate and requires a large amount of computational resources. Here we develop a set of equations to define the viscosity ratio from the simulation results to show the influence of the bubbles on the viscosity as a function of the volume fraction. One application of this work has been used to study a specific type of cement that has bubbles injected into the slurry while it is still fluid. The bubbles are added to reduce the density but they also improve the properties of the cement with the increase in viscosity. We show that the computed results match the few experimental results that have been reported. View Full-Text
Keywords: stokesian dynamics; dense suspension; rheology; bubble suspension; suspension viscosity stokesian dynamics; dense suspension; rheology; bubble suspension; suspension viscosity
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Rosenbaum, E.; Massoudi, M.; Dayal, K. The Influence of Bubbles on Foamed Cement Viscosity Using an Extended Stokesian Dynamics Approach. Fluids 2019, 4, 166.

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