Viscous fingering as a paradigm of interfacial pattern formation: Recent results and new challenges

J Casademunt - Chaos: An Interdisciplinary Journal of Nonlinear …, 2004‏ - pubs.aip.org
We review recent results on dynamical aspects of viscous fingering. The Saffman–Taylor
instability is studied beyond linear stability analysis by means of a weakly nonlinear analysis …

A review of one-phase Hele-Shaw flows and a level-set method for nonstandard configurations

LC Morrow, TJ Moroney, MC Dallaston… - The ANZIAM …, 2021‏ - cambridge.org
The classical model for studying one-phase Hele-Shaw flows is based on a highly nonlinear
moving boundary problem with the fluid velocity related to pressure gradients via a Darcy …

Surprises in viscous fingering

S Tanveer - Journal of Fluid Mechanics, 2000‏ - cambridge.org
In this paper, we review some aspects of viscous fingering in a Hele-Shaw cell that at first
sight appear to defy intuition. These include singular effects of surface tension relative to the …

Bubble motion in a Hele–Shaw cell

AR Kopf‐Sill, GM Homsy - The Physics of fluids, 1988‏ - pubs.aip.org
The shapes and motion of immiscible bubbles in a Hele–Shaw cell driven by the motion of
the surrounding fluid were studied. Six classes of steady shapes, some of which are …

Boundary element analysis of the time-dependent motion of a semi-infinite bubble in a channel

D Halpern, DP Gaver III - Journal of Computational Physics, 1994‏ - Elsevier
We present a boundary element method to investigate the time-dependent translation of a
two-dimensional bubble in a channel of width 2a containing a fluid of viscosity μ and surface …

A diffuse-interface model for electrowetting drops in a Hele-Shaw cell

HW Lu, K Glasner, AL Bertozzi, CJ Kim - Journal of Fluid Mechanics, 2007‏ - cambridge.org
Electrowetting has recently been explored as a mechanism for moving small amounts of
fluids in confined spaces. We propose a diffuse-interface model for drop motion, due to …

Analytic theory for the selection of a symmetric Saffman–Taylor finger in a Hele–Shaw cell

S Tanveer - The Physics of fluids, 1987‏ - pubs.aip.org
An analytic theory is presented for the selection mechanism of a symmetric finger with a
discrete set of possible width from a continuum of nonsymmetric Saffman–Taylor finger …

Air bubble migration in a granular porous medium: Experimental studies

SE Roosevelt, MY Corapcioglu - Water Resources Research, 1998‏ - Wiley Online Library
To provide insight into the mechanism of bubble migration in in situ air sparging in a coarse
porous medium, the rise of air bubbles through a granular porous medium is studied through …

Multiple scales in streamer discharges, with an emphasis on moving boundary approximations

U Ebert, F Brau, G Derks, W Hundsdorfer, CY Kao… - …, 2010‏ - iopscience.iop.org
Streamer discharges determine the very first stage of sparks or lightning, and they govern
the evolution of huge sprite discharges above thunderclouds as well as the operation of …

Droplet migration in a Hele–Shaw cell: Effect of the lubrication film on the droplet dynamics

Y Ling, JM Fullana, S Popinet, C Josserand - Physics of Fluids, 2016‏ - pubs.aip.org
Droplet migration in a Hele–Shaw cell is a fundamental multiphase flow problem which is
crucial for many microfluidics applications. We focus on the regime at low capillary number …