195 citations · 1.1k across the 51 of their papers we have counts for
20 papers · 1 filter
Flow morphology and patterns in porous media convection: A persistent homology analysis
Marco De Paoli, Sergio Pirozzoli, Catherin Neena Lalu +1
Convective mixing in porous media is crucial in both geophysical and industrial fields, spanning applications ranging from carbon dioxide sequestration to geothermal energy extract…
Flow through Pore-Size Graded Membrane Pore Networks
Binan Gu, Lou Kondic, Linda J. Cummings
Pore-size gradients are often used in the design of membrane filters to increase filter lifetime and ensure fuller use of the initial membrane pore volume. In this work, we impose…
Thin viscoelastic dewetting films of Jeffreys type subjected to gravity and substrate interactions
Valeria Barra, Shahriar Afkhami, Lou Kondic
This work presents a study of the interfacial dynamics of thin viscoelastic films subjected to the gravitational force and substrate interactions induced by the disjoining pressure…
The influence of thermal effects on the breakup of thin films of nanometric thickness
Ryan H. Allaire, Linda J. Cummings, Lou Kondic
We apply a previously developed asymptotic model (J. Fluid. Mech. 915, A133 (2021)) to study instabilities of free surface films of nanometric thickness on thermally conductive sub…
A Graphical Representation of Membrane Filtration
Binan Gu, Lou Kondic, Linda J. Cummings
We analyze the performance of membrane filters represented by pore networks using two criteria: 1) total volumetric throughput of filtrate over the filter lifetime and 2) accumulat…
On efficient asymptotic modelling of thin films on thermally conductive substrates
Ryan H. Allaire, Linda J. Cummings, Lou Kondic
We consider a free surface thin film placed on a thermally conductive substrate and exposed to an external heat source in a setup where the heat absorption depends on the local fil…
Instabilities of a thin liquid film in a funnel
T. -S. Lin, J. A. Dijksman, L. Kondic
We explore flow of a completely wetting fluid in a funnel, with particular focus on contact line instabilities at the fluid front. While the flow in a funnel may be related to a nu…
Modeling and design optimization for pleated membrane filters
Yixuan Sun, Pejman Sanaei, Lou Kondic +1
Pleated membrane filters, which offer larger surface area to volume ratios than unpleated membrane filters, are used in a wide variety of applications. However, the performance of…
Computing dynamics of thin films via large scale GPU-based simulations
Michael-Angelo Y. -H. Lam, Linda J. Cummings, Lou Kondic
We present the results of large scale simulations of 4th order nonlinear partial differential equations of dif- fusion type that are typically encountered when modeling dynamics of…
Self-assembly of a drop pattern from a two-dimensional grid of nanometric metallic filaments
Ingrith Cuellar, Pablo D. Ravazzoli, Javier A. Diez +5
We report experiments, modeling and numerical simulations of the self--assembly of particle patterns obtained from a nanometric metallic square grid. Initially, nickel filaments of…
Direct numerical simulation of variable surface tension flows using a Volume-of-Fluid method
Ivana Seric, Shahriar Afkhami, Lou Kondic
We develop a general methodology for the inclusion of variable surface tension into a Volume-of-Fluid based Navier-Stokes solver. This new numerical model provides a robust and acc…
Interfacial Dynamics of Thin Viscoelastic Films and Drops
Valeria Barra, Shahriar Afkhami, Lou Kondic
We present a computational investigation of thin viscoelastic films and drops on a solid substrate subject to the van der Waals interaction force, in two spatial dimensions. The go…
A numerical approach for the direct computation of flows including fluid-solid interaction: modeling contact angle, film rupture, and dewetting
K. Mahady, S. Afkhami, L. Kondic
In this paper, we present a computationally efficient method for including fluid-solid interactions into direct numerical simulations of the Navier-Stokes equations. This method is…
A volume of fluid method for simulating fluid/fluid interfaces in contact with solid boundaries
Kyle Mahady, Shahriar Afkhami, Lou Kondic
In this paper, we present a novel approach to model the fluid/solid interaction forces in a direct solver of the Navier-Stokes equations based on the volume of fluid interface trac…
Capillary focusing close to a topographic step: Shape and instability of confined liquid filaments
M. Hein, S. Afkhami, R. Seemann +1
Step-emulsification is a microfluidic technique for droplet generation which relies on the abrupt decrease of confinement of a liquid filament surrounded by a continuous phase. A s…
Numerical simulation of ejected molten metal-nanoparticles liquefied by laser irradiation: Interplay of geometry and dewetting
S. Afkhami, L. Kondic
Metallic nanoparticles, liquefied by fast laser irradiation, go through a rapid change of shape attempting to minimize their surface energy. The resulting nanodrops may be ejected…
Note on the hydrodynamic description of thin nematic films: strong anchoring model
Te-Sheng Lin, Linda J. Cummings, Andrew J. Archer +2
We discuss the long-wave hydrodynamic model for a thin film of nematic liquid crystal in the limit of strong anchoring at the free surface and at the substrate. We rigorously clari…
Thin films flowing down inverted substrates: Three dimensional flow
T. -S. Lin, L. Kondic, A. Filippov
We study contact line induced instabilities for a thin film of fluid under destabilizing gravitational force in three dimensional setting. In the previous work (Phys. Fluids, {\bf…
Thin films flowing down inverted substrates: two dimensional flow
Te-sheng Lin, Lou Kondic
We consider free surface instabilities of films flowing on inverted substrates within the framework of lubrication approximation. We allow for the presence of fronts and related co…
How do drops evaporate?
Nebojsa Murisic, Lou Kondic
We consider evaporation of pure liquid drops on a thermally conductive substrate. Two evaporative models are considered: one that concentrates on the liquid phase in determining ev…