Films over topography: from creeping flow to linear stability, theory, and experiments, a review

N Aksel, M Schörner - Acta Mechanica, 2018 - Springer
The present review deals with the effects of topography and inertia on gravity-driven film
flows. The article is organized like a rope ladder, with the rungs of topography and inertia …

Nanoliquid film flow due to a moving substrate and heat transfer

M Turkyilmazoglu - The European Physical Journal Plus, 2020 - Springer
The present work analyzed the flow and heat transfer of the nanoliquid film flow over a
moving inclined substrate. The motion of nanoparticles is induced by the action of both the …

How viscoelastic is human blood plasma?

S Varchanis, Y Dimakopoulos, C Wagner… - Soft Matter, 2018 - pubs.rsc.org
Blood plasma has been considered a Newtonian fluid for decades. Recent experiments
(Brust et al., Phys. Rev. Lett., 2013, 110) revealed that blood plasma has a pronounced …

Asymmetric flows of complex fluids past confined cylinders: A comprehensive numerical study with experimental validation

S Varchanis, CC Hopkins, AQ Shen, J Tsamopoulos… - Physics of …, 2020 - pubs.aip.org
Three non-Newtonian constitutive models are employed to investigate how fluid rheological
properties influence the development of laterally asymmetric flows past confined cylinders …

Flow of wormlike micellar solutions over concavities

F Hillebrand, S Varchanis, CC Hopkins, SJ Haward… - Soft Matter, 2024 - pubs.rsc.org
We present a comprehensive investigation combining numerical simulations with
experimental validation, focusing on the creeping flow behavior of a shear-banding …

A new finite element formulation for viscoelastic flows: Circumventing simultaneously the LBB condition and the high-Weissenberg number problem

S Varchanis, A Syrakos, Y Dimakopoulos… - Journal of Non …, 2019 - Elsevier
In this paper, we propose a new, fully consistent and highly stable finite element formulation
for the simulation of viscoelastic flows. In our method, we have implemented equal order …

PEGAFEM-V: a new Petrov-Galerkin finite element method for free surface viscoelastic flows

S Varchanis, A Syrakos, Y Dimakopoulos… - Journal of Non …, 2020 - Elsevier
The recently proposed finite element (FE) formulation for viscoelastic flows that allows the
use of equal order linear interpolants for all variables and simultaneously does not suffer …

[HTML][HTML] Comparative analysis of Maxwell and Xue models for a hybrid nanofluid film flow on an inclined moving substrate

Y Zhang, N Shahmir, M Ramzan, HAS Ghazwani… - Case Studies in Thermal …, 2021 - Elsevier
The present investigation studies the flow and heat transfer of an engine oil-based at an
angle of inclination of 45° to the horizontal. The single-phase model has been used, which …

Steady three-dimensional patterns in gravity-driven film flow down an inclined sinusoidal bottom contour

B Al-Shamaa, T Kahraman, A Wierschem - Physics of Fluids, 2023 - pubs.aip.org
We experimentally studied gravity-driven film flow in an inclined corrugated channel.
Beyond a critical Reynolds number, three-dimensional patterns appear. We identified two …

[HTML][HTML] Evaluation of constitutive models for shear-banding wormlike micellar solutions in simple and complex flows

S Varchanis, SJ Haward, CC Hopkins… - Journal of Non …, 2022 - Elsevier
Wormlike micellar solutions possess complex rheology: when exposed to a flow field, the
wormlike micelles may orientate, stretch, and break into smaller micelles. Entangled …