Special Session 66: 

Degraded mixing solutions for the Incompressible Porous Media.

Angel castro
ICMAT
Spain
Co-Author(s):    Diego Cordoba, Daniel Faraco and Francisco Mengual
Abstract:
I will present the construction of degraded mixing solutions for the IPM system. This system models the dynamics of an incompressible and viscous fluid in a porous media and under the gravitational force. When the initial density of the fluid just takes two values the existence of solutions for IPM is known as the Muskat problem. In a previous work, together with D. Cordoba and D. Faraco, we showed the existence of solutions in the unstable regime which consist of the mixing of the two densities. In this talk I will skech a new construction in which we show that the solutions, in average, mix in a linear way. This is a work in collaboration with D. Faraco and F. Mengual Breton.