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   Accueil > Annuaire > C. Ruyer-Quil

Simulating the flow of Bingham fluids in expansion-contraction geometries : comparison with physical experiments

Arthur Marly (ENS Lyon)

We take interest in the flow of viscoplastic fluids in an expansion-contraction geometry. We used for the simulations a finite difference discretization with a double imbricated Augmented Lagrangian method. The simulations are compared with physical experiments performed by P. Coussot and G. Chambon groups. We recover interesting features of the velocity fields such as: - the evolution of the boundary layer width in frustrated regimes, - the existence of a slip line and the Poiseuille-like behaviour of the velocity above this line. We also give updated views of the structure of the pseudo-plug zones.

Dernière modification : December 01 2016, 17:59:09.