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Séminaire EDP-Analyse ICJ

Transport of congestion in two-phase compressible/incompressible flow

by Ewelina Zatorska (University College London)

mardi 6 février 2018 de au (Europe/Paris)
at ICJ, Université Claude Bernard Lyon 1 ( Fokko Du Cloux )
Campus de la Doua, Bâtiment Braconnier, Villeurbanne
Can the fluid equations be used to model pedestrian motion or traffic?
In this talk, I will present the compressible-incompressible two phase system describing the flow in the free and in the congested regimes.
I will show how to approximate such system by the compressible Navier-Stokes equations with singular pressure for the fixed barrier densities, together with some recent developments for the barrier densities varying in the space and time.
At the end, I will present the numerical results showing that our macroscopic system captures some features characteristic for microscopic models of collective behaviour.

This is a talk based on several papers in collaboration with: D. Bresch, C. Perrin, P. Degond, P. Minkowski, and L. Navoret.