54 citations · 110 across the 7 of their papers we have counts for
7 papers
Scaling solutions for current-carrying cosmic string networks
F. C. N. Q. Pimenta, C. J. A. P. Martins
Cosmic string networks are the best motivated relics of cosmological phase transitions, being unavoidable in many physically plausible extensions of the Standard Model. Most studie…
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 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…
Runaway dilaton models: improved constraints from the full cosmological evolution
Léo Vacher, Nils Schöneberg, J. D. F. Dias +2
One of the few firm predictions of string theory is the existence of a massless scalar field coupled to gravity, the dilaton. In its presence, the value of the fundamental constant…
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…
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…