Viscous fingering phenomena in the early stage of polymer membrane formation

M Hopp-Hirschler, MS Shadloo… - Journal of Fluid …, 2019 - cambridge.org
Currently, the most important preparation process for porous polymer membranes is the
phase inversion process. While applied for several decades in industry, the mechanism that …

Experimental study on the role of polymer addition in Saffman–Taylor instability in miscible flow displacement

P Jangir, R Mohan, P Chokshi - Physics of Fluids, 2022 - pubs.aip.org
The role of nonlinear rheology of polymeric fluids in finger formation and the ensuing
morphology of the patterns in miscible flow displacement is examined experimentally. The …

The dynamics of miscible viscous fingering from onset to shutdown

JS Nijjer, DR Hewitt, JA Neufeld - Journal of Fluid Mechanics, 2018 - cambridge.org
We examine the full 'life cycle'of miscible viscous fingering from onset to shutdown with the
aid of high-resolution numerical simulations. We study the injection of one fluid into a planar …

Control of radial miscible viscous fingering

V Sharma, S Nand, S Pramanik, CY Chen… - Journal of Fluid …, 2020 - cambridge.org
We investigate the stability of radial viscous fingering (VF) in miscible fluids. We show that
the instability is determined by an interplay between advection and diffusion during the initial …

Effect of Hele–Shaw cell gap on radial viscous fingering

S Nand, V Sharma, SK Das, SS Padhee, M Mishra - Scientific Reports, 2022 - nature.com
The flow through a Hele–Shaw cell is an experimental prototype to study the flow through a
porous medium as well as the flow in microfluidic devices. In context with porous medium …

Three-dimensional viscous fingering of miscible fluids in porous media

T Suekane, J Ono, A Hyodo, Y Nagatsu - Physical Review Fluids, 2017 - APS
Viscous fingering is a flow instability that is induced at the displacement front when a less-
viscous fluid (LVF) displaces a more-viscous fluid (MVF). Because of the opaque nature of …

Numerical study on topological change of viscous fingering induced by a phase separation with Korteweg force

S Seya, RX Suzuki, Y Nagatsu, T Ban… - Journal of Fluid …, 2022 - cambridge.org
We develop coupled evolution equations for viscous fingering (VF) and phase separation in
partially miscible systems by combining a simple double-well thermodynamic free energy …

Numerical study on nonisothermal reactive viscous fingering

P Jangir, R Mohan, P Chokshi - Chemical Engineering Science, 2024 - Elsevier
The numerical study examines the dynamics of viscous fingering in a miscible flow
displacement involving an exothermic reaction between displacing and displaced fluids …

Viscous fingering of miscible annular ring

V Sharma, HB Othman, Y Nagatsu… - Journal of Fluid …, 2021 - cambridge.org
Miscible viscous fingering (VF) of the annulus of a more viscous fluid radially displaced by a
less viscous fluid is investigated through both numerical computations and experimental …

Stable and unstable miscible displacements in layered porous media

JS Nijjer, DR Hewitt, JA Neufeld - Journal of Fluid Mechanics, 2019 - cambridge.org
The effect of permeability heterogeneities and viscosity variations on miscible displacement
processes in porous media is examined using high-resolution numerical simulations and …