Interfacial instabilities in confined displacements involving non-Newtonian fluids

Interfacial instabilities in confined displacements involving non-Newtonian fluids

The growth of interfacial instabilities during fluid displacements can be driven by gradients in pressure, viscosity and surface tension, and by applying external fields. Since displacements of non-Newtonian fluids such as polymer solutions, colloidal and granular slurries are ubiquitous in natural...

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Veröffentlicht in:Europhysics letters 2024-02, Vol.145 (4), p.47001
Hauptverfasser: Parmar, Vaibhav Raj Singh, Bandyopadhyay, Ranjini
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Sprache:eng
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Capillary pressure
Colloiding
External pressure
Newtonian fluids
Non Newtonian fluids
Slurries
Surface tension
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creator Parmar, Vaibhav Raj Singh
Bandyopadhyay, Ranjini
description The growth of interfacial instabilities during fluid displacements can be driven by gradients in pressure, viscosity and surface tension, and by applying external fields. Since displacements of non-Newtonian fluids such as polymer solutions, colloidal and granular slurries are ubiquitous in natural and industrial processes, understanding the growth mechanisms and fully developed morphologies of interfacial patterns involving non-Newtonian fluids is extremely important. In this perspective, we focus on displacement experiments, wherein competitions between capillary, viscous, elastic and frictional forces drive the onset and growth of primarily viscous fingering instabilities in confined geometries. We conclude by highlighting several exciting open problems in this research area.
doi_str_mv 10.1209/0295-5075/ad2d13
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subjects Capillary pressure
Colloiding
External pressure
Newtonian fluids
Non Newtonian fluids
Slurries
Surface tension
title Interfacial instabilities in confined displacements involving non-Newtonian fluids
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