Please use this identifier to cite or link to this item:
https://hdl.handle.net/20.500.14279/29034
Title: | Modeling the rheological behavior of crude oil-water emulsions | Authors: | Papadimitriou, Maria K. Stephanou, Pavlos S. |
Major Field of Science: | Engineering and Technology | Field Category: | Chemical Sciences | Keywords: | Rheology;Crude oil;Crude oil-water emulsions;Non-equilibrium thermodynamics;Viscosity;Normal stresses | Issue Date: | Nov-2022 | Source: | Physics of Fluids, 2022, vol. 34, no. 11, articl. no. 113107 | Volume: | 34 | Issue: | 11 | Journal: | Physics of Fluids | Abstract: | During crude oil extraction, crude oil is often mixed with water, leading to the formation of water-in-oil emulsions. Since these emulsions pose severe flow resistance, such as higher pressure drops, due to their complex fluid rheology, it is important to have in our arsenal a rheological constitutive model that accurately predicts their rheological response. In the present work, we propose such a model wherein the emulsions are modeled as deformable volume-preserving droplets via the use of a determinant-preserving contravariant second-rank tensor. We use the generalized bracket formalism of non-equilibrium thermodynamics to make sure that the derived model is by construction thermodynamically admissible. An additional scalar structural variable is considered to allow the prediction of a yielding point, following previous work. The predictions of the new model are shown to be in very good agreement with available experimental measurements. | URI: | https://hdl.handle.net/20.500.14279/29034 | ISSN: | 10897666 | DOI: | 10.1063/5.0123274 | Rights: | © AIP | Type: | Article | Affiliation : | Cyprus University of Technology | Publication Type: | Peer Reviewed |
Appears in Collections: | Άρθρα/Articles |
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