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Article

Analyzing Impacts of Interfacial Instabilities on the Sweeping Power of Newtonian Fluids to Immiscibly Displace Power-Law Materials

Department of Civil Engineering, Geo and Environmental Sciences, Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany
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Author to whom correspondence should be addressed.
Academic Editor: Wei Wang
Processes 2021, 9(5), 742; https://doi.org/10.3390/pr9050742
Received: 17 March 2021 / Revised: 7 April 2021 / Accepted: 20 April 2021 / Published: 22 April 2021
(This article belongs to the Special Issue Complex Fluid Dynamics Modeling and Simulation)
Injection of Newtonian fluids to displace pseudoplastic and dilatant fluids, governed by the power-law viscosity relationship, is common in many industrial processes. In these applications, changing the viscosity of the displaced fluid through velocity alteration can regulate interfacial instabilities, displacement efficiency, the thickness of the static wall layer, and the injected fluid’s tendency to move toward particular parts of the channel. The dynamic behavior of the fluid–fluid interface in the case of immiscibility is highly complicated and complex. In this study, a code was developed that utilizes a multi-component model of the lattice Boltzmann method to decrease the computational cost and accurately model these problems. Accordingly, a 2D inclined channel, filled with a stagnant incompressible Newtonian fluid in the initial section followed by a power-law material, was modeled for numerous scenarios. In conclusion, the results indicate that reducing the power-law index can regulate interfacial instabilities leading to dynamic deformation of static wall layers at the top and the bottom of the channel. However, it does not guarantee a reduction in the thickness of these layers, which is crucial to improve displacement efficiency. The impacts of the compatibility factor and power-law index variations on the filling pattern and finger structure were intensively evaluated. View Full-Text
Keywords: lattice Boltzmann method; multi-component flow; He–Chen–Zhang method; power-law non-Newtonian fluid; displacement flow lattice Boltzmann method; multi-component flow; He–Chen–Zhang method; power-law non-Newtonian fluid; displacement flow
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MDPI and ACS Style

Esmaeilpour, M.; Gholami Korzani, M. Analyzing Impacts of Interfacial Instabilities on the Sweeping Power of Newtonian Fluids to Immiscibly Displace Power-Law Materials. Processes 2021, 9, 742. https://doi.org/10.3390/pr9050742

AMA Style

Esmaeilpour M, Gholami Korzani M. Analyzing Impacts of Interfacial Instabilities on the Sweeping Power of Newtonian Fluids to Immiscibly Displace Power-Law Materials. Processes. 2021; 9(5):742. https://doi.org/10.3390/pr9050742

Chicago/Turabian Style

Esmaeilpour, Morteza, and Maziar Gholami Korzani. 2021. "Analyzing Impacts of Interfacial Instabilities on the Sweeping Power of Newtonian Fluids to Immiscibly Displace Power-Law Materials" Processes 9, no. 5: 742. https://doi.org/10.3390/pr9050742

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