I³MS - Boyaval Seminar

Location: AICES Seminar Room 115, 1st floor, Schinkelstr. 2, 52062 Aachen

Dr. Sebastien Boyaval - Modelling Micro-Structured Flows : Recent Results, and Application to Viscoelastic Fluids

Laboratoire d'hydraulique Saint-Venant, Ecole des Ponts ParisTech, France

Abstract

I will recall some classical flow models for non-Newtonian fluids with a micro-structure and what one has been able to do with them at present.
I will then introduce some modelling problems which remain challenging, and propose new flow models to face challenges like
High-Weissenberg number problems for viscoelastic fluids (when the elastic micro-structure evolves along the fluid flow possibly far from equilibrium).
Numerical simulations will support the discussion and a Finite-Volume discretization of the new models will be presented to that aim
(with stability constraints for preservation of the fields domains and a formulation of the thermodynamics second-principle).