Special Session 15: Qualitative properties for solutions to nonlinear elliptic and parabolic equations

Global wellposedness for the Muskat problem
Hongjie Dong
Brown University
USA
Co-Author(s):    
Abstract:
We study the free boundary problem for 2D and 3D incompressible flow in porous media, known as the one-phase Muskat problem. In the absence of surface tension, we prove that when the initial interface is given by a Lipschitz graph, there exists a unique global Lipschitz strong solution. When surface tension is included, we establish small-data global well-posedness and time-decay results in both the whole-space and periodic settings. This talk is based on joint work with Francisco Gancedo (Universidad de Sevilla), Huy Q. Nguyen (University of Maryland), and Hyunwoo (Will) Kwon (Brown University).