55 citations · 219 across the 10 of their papers we have counts for
10 papers
Harnessing Machine Learning for Hybrid Constitutive Modelling of Viscoelastic Fluid Flows in Computational Rheology
J. L. Cummings, C. Fernandes, F. Dong +2
Recent advances in data-driven modelling have highlighted the potential of hybrid approaches which combine Tensor Basis Neural Networks (TBNN) with Universal Differential Equations…
Rheological behaviour and flow dynamics of Vitreous Humour substitutes used in eye surgery during saccadic eye movements
Andreia F. Silva, Francisco Pimenta, Manuel A. Alves +1
This work discusses the rheology of several vitreous humour (VH) substitutes used in eye surgery (perfluorocarbons and silicone oils) and their flow behaviour when subjected to sac…
Extensional rheometry of mobile fluids. Part II: Comparison between the uniaxial, planar and biaxial extensional rheology of dilute polymer solutions using numerically-optimized stagnation point microfluidic devices
Simon J. Haward, Stylianos Varchanis, Gareth H. McKinley +2
In Part I of this paper [Haward et al. submitted (2023)], we presented a new three-dimensional microfluidic device (the optimized uniaxial and biaxial extensional rheometer, OUBER)…
Extensional rheometry of mobile fluids. Part I: OUBER, an optimized uniaxial and biaxial extensional rheometer
Simon J. Haward, Francisco Pimenta, Stylianos Varchanis +4
We present a numerical optimization of a "6-arm cross-slot" device, yielding several three-dimensional shapes of fluidic channels designed to impose close approximations to ideal u…
Conjugate heat transfer in the unbounded flow of a viscoelastic fluid past a sphere
F. Pimenta, M. A. Alves
This work addresses the conjugate heat transfer of a simplified PTT fluid flowing past an unbounded sphere in the Stokes regime (). The problem is numerically solved wit…
A coupled finite-volume solver for numerical simulation of electrically-driven flows
Francisco Pimenta, Manuel A. Alves
The accuracy and stability of implicit CFD codes are frequently impaired by the decoupling between variables, which can ultimately lead to numerical divergence. Coupled solvers, wh…
Secondary flows of viscoelastic fluids in serpentine microchannels
Lucie Ducloue, Laura Casanellas, Simon J. Haward +5
Secondary flows are ubiquitous in channel flows, where small velocity components perpendicular to the main velocity appear due to the complexity of the channel geometry and/or that…
Numerical simulation of electrically-driven flows using OpenFOAM
Francisco Pimenta, Manuel A. Alves
In this work, we study the implementation of electrically-driven flow (EDF) models in the finite-volume framework of . The Poisson-Nernst-Planck model is…
Enhanced Microfluidic Mixing via a Tricritical Spiral Vortex Instability
Simon J. Haward, Robert J. Poole, Manuel A. Alves +3
Experimental measurements and numerical simulations are made on fluid flow through cross-slot devices with a range of aspect (depth:width) ratios, 0.4 < alpha < 3.87. For low Reyno…
Serpentine channels: micro -- rheometers for fluid relaxation times
Josephine Zilz, Christof Schäfer, Christian Wagner +3
We propose a novel device capable of measuring the relaxation time of viscoelastic fluids as small as 1\,ms. In contrast to most rheometers, which by their very nature are concerne…