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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