Pore‐scale flow characterization of polymer solutions in microfluidic porous media

CA Browne, A Shih, SS Datta - Small, 2020 - Wiley Online Library
Polymer solutions are frequently used in enhanced oil recovery and groundwater
remediation to improve the recovery of trapped nonaqueous fluids. However, applications …

Flow of DNA in micro/nanofluidics: From fundamentals to applications

L Rems, D Kawale, LJ Lee, PE Boukany - Biomicrofluidics, 2016 - pubs.aip.org
Thanks to direct observation and manipulation of DNA in micro/nanofluidic devices, we are
now able to elucidate the relationship between the polymer microstructure and its …

Bistability in the unstable flow of polymer solutions through pore constriction arrays

CA Browne, A Shih, SS Datta - Journal of Fluid Mechanics, 2020 - cambridge.org
Polymer solutions are often injected in porous media for applications such as oil recovery
and groundwater remediation. As the fluid navigates the tortuous pore space, elastic …

Polymer conformation during flow in porous media

D Kawale, G Bouwman, S Sachdev, PLJ Zitha… - Soft matter, 2017 - pubs.rsc.org
Molecular conformations of individual polymers during flow through porous media are
directly observed by single-DNA imaging in microfluidics. As the Weissenberg number …

Large velocity fluctuations in small-Reynolds-number pipe flow of polymer solutions

D Bonn, F Ingremeau, Y Amarouchene, H Kellay - Physical Review E …, 2011 - APS
The flow of polymer solutions is examined in a flow geometry where a jet is used to inject the
viscoelastic solution into a cylindrical tube. We show that this geometry allows for the …

Stretching polymers in droplet-pinch-off experiments

F Ingremeau, H Kellay - Physical Review X, 2013 - APS
Droplet pinch off, which occurs when a drop of liquid detaches from a capillary, can be
strongly modified in the presence of polymers, giving rise to long and slender filaments that …

Molecular processes leading to “necking” in extensional flow of polymer solutions: using microfluidics and single DNA imaging

S Sachdev, A Muralidharan, PE Boukany - Macromolecules, 2016 - ACS Publications
We study the necking and pinch-off dynamics of liquid droplets that contain a semidilute
polymer solution of polyacrylamide close to overlap concentration by combining …

Drag enhancement and drag reduction in viscoelastic fluid flow around a cylinder

YL **ong, CH Bruneau, H Kellay - Europhysics letters, 2010 - iopscience.iop.org
We here use direct numerical simulations to describe the flow of a viscoelastic fluid,
modeled using the so-called Oldroyd B model, around a cylinder in two dimensions. A wide …

Multiplex vortex instability in the flow of non-Newtonian fluids through microcavity arrays

XY Xu, ZY Zheng, K Tian, D Wang, KR Qin, CD Xue - Physics of Fluids, 2024 - pubs.aip.org
Complex fluids always possess obvious non-Newtonian properties that facilitate the
occurrence and development of vortex instability in porous media, which is of critical …

Axisymmetric Stokes flow due to a point-force singularity acting between two coaxially positioned rigid no-slip disks

A Daddi-Moussa-Ider, AR Sprenger… - Journal of Fluid …, 2020 - cambridge.org
We investigate theoretically, on the basis of the steady Stokes equations for a viscous
incompressible fluid, the flow induced by a stokeslet located on the centre axis of two …