In this short communication, we analyse the potential of the natural stress formulation (NSF) (i.e. aligning the stress basis along streamlines) for computing planar flows of an Oldroyd-B fluid around sharp corners. This ...

We present a numerical scheme for a previously unexploited formulation of the equations for unsteady viscoelastic flow. The formulation aligns the polymer stress along particle paths/streamlines, utilising the characteristic ...

We focus here on using a Newtonian velocity field to evaluate numerical schemes for two different formulations of viscoelastic flow. The two distinct formulations we consider, correspond to either using a fixed basis for ...

Neste projeto investiga-se numericamente escoamentos com escorregamento utilizando uma formulação alternativa para descrever o tensor que representa os efeitos viscoelásticos do fluido. São analisados o caso Newtoniano e, ...

Oxidative stress, which is a result of overproduction and accumulation of free radicals, is the main cause of several skin degenerative diseases, such as aging. Polyphenols, such as gallic acid, are an important class of ...

Pesticide formulations are currently considered as one of the main factors responsible for environmental contamination worldwide. Consequently, several wild species can be affected by the over use of pesticides related to ...

© 2022 by the authors.The central nervous system (CNS) is particularly vulnerable to oxidative stress and inflammation, which affect neuronal function and survival. Nowadays, there is great interest in the development of ...

Pesticides and fertilizers are widely used to enhance agriculture yields, although the fraction of the pesticides applied in the feld that reaches the targets is less than 0.1%. Such indiscriminate use of chemical pesticides ...

Neste trabalho é apresentado o estudo de um método numérico para resolver as equações de Navier-Stokes incompressíveis em escoamentos que possuem superfícies livres e mudanças topológicas. As equações governantes são ...