126 citations · 514 across the 13 of their papers we have counts for
13 papers
Modeling the evolution of COVID-19 via compartmental and particle-based approaches: application to the Cyprus case
Constantia Alexandrou, Vangelis Harmandaris, Anastasios Irakleous +2
We present two different approaches for modeling the spread of the COVID-19 pandemic. Both approaches are based on the population classes susceptible, exposed, infectious, quaranti…
Droplet motion on chemically heterogeneous substrates with mass transfer. II. Three-dimensional dynamics
Nikos Savva, Danny Groves
We consider a thin droplet that spreads over a flat, horizontal and chemically heterogeneous surface. The droplet is subjected to changes in its volume though a prescribed, arbitra…
Droplet motion on chemically heterogeneous substrates with mass transfer. I. Two-dimensional dynamics
Danny Groves, Nikos Savva
We consider the dynamics of thin two-dimensional viscous droplets on chemically heterogeneous surfaces moving under the combined effects of slip, mass transfer and capillarity. The…
Pseudospectral methods for density functional theory in bounded and unbounded domains
Andreas Nold, Benjamin D. Goddard, Peter Yatsyshin +2
Classical Density Functional Theory (DFT) is a statistical-mechanical framework to analyze fluids, which accounts for nanoscale fluid inhomogeneities and non-local intermolecular i…
The contact line behaviour of solid-liquid-gas diffuse-interface models
David N. Sibley, Andreas Nold, Nikos Savva +1
A solid-liquid-gas moving contact line is considered through a diffuse-interface model with the classical boundary condition of no-slip at the solid surface. Examination of the asy…
Wetting in a two-dimensional capped capillary. Part II: Three-phase coexistence
P. Yatsyshin, N. Savva, S. Kalliadasis
In Part II of this study we consider two cases of three-phase coexistence. First, the capped capillary may allow for vapour, drop-like, and slab-like phases to coexist at the same…
Wetting in a two-dimensional capped capillary. Part I: Wetting temperature and capillary prewetting
P. Yatsyshin, N. Savva, S. Kalliadasis
In this two-part study we investigate the phase behaviour of a fluid spatially confined in a semi-infinite rectangular pore formed by three orthogonal walls and connected to a rese…
A comparison of slip, disjoining pressure, and interface formation models for contact line motion through asymptotic analysis of thin two-dimensional droplet spreading
David N. Sibley, Andreas Nold, Nikos Savva +1
The motion of a contact line is examined, and comparisons drawn, for a variety of models proposed in the literature. Pressure and stress behaviours at the contact line are examined…
On the moving contact line singularity: Asymptotics of a diffuse-interface model
David N. Sibley, Andreas Nold, Nikos Savva +1
The behaviour of a solid-liquid-gas system near the three-phase contact line is considered using a diffuse-interface model with no-slip at the solid and where the fluid phase is sp…
Geometry-induced phase transition in fluids: capillary prewetting
Petr Yatsyshin, Nikos Savva, Serafim Kalliadasis
We report a new first-order phase transition preceding capillary condensation and corresponding to the discontinuous formation of a curved liquid meniscus. Using a mean-field micro…
Slip or not slip? A methodical examination of the interface formation model using two-dimensional droplet spreading on a horizontal planar substrate as a prototype system
David N. Sibley, Nikos Savva, Serafim Kalliadasis
We consider the spreading of a thin two-dimensional droplet on a planar substrate as a prototype system to compare the contemporary model for contact line motion based on interface…
Generalized dynamical density functional theory for classical fluids and the significance of inertia and hydrodynamic interactions
Benjamin D. Goddard, Andreas Nold, Nikos Savva +2
We study the dynamics of a colloidal fluid including inertia and hydrodynamic interactions, two effects which strongly influence the non-equilibrium properties of the system. We de…
Two-dimensional droplet spreading over random topographical substrates
Nikos Savva, Serafim Kalliadasis, Grigorios A. Pavliotis
We examine theoretically the effects of random topographical substrates on the motion of two-dimensional droplets via appropriate statistical approaches. Different random substrate…