Abstract
AbstractThe annular flow of complex viscoelastic fluids, described by the generalised Phan-Thien–Tanner model, is studied. This model considers the Mittag-Leffler function instead of the usual linear or exponential functions of the trace of the stress tensor, and includes two new parameters that provide additional fitting flexibility. We derive a semi-analytical solution that provides a better understanding of the behaviour of this type of fluid in annular flows and also helps to improve the modelling of complex materials.
Funder
Fundação para a Ciância e a Tecnologia
Universidade do Porto
Publisher
Springer Science and Business Media LLC
Subject
Mechanical Engineering,Computational Mechanics
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