MODELLING OF INTERFACES IN UNSATURATED POROUS MEDIA
Mario Ohlberger, Ben Schweizer · 2007
Abstract. In this contribution we discuss interface conditions for unsaturated flow in porous media. Our aim is to provide a concise collection of the arguments that lead to the standard models for interfaces that either separate two porous media or a porous medium and void space. We furthermore present a regularization procedure for these interface conditions. In a singular limit, a nonlinear boundary condition of third kind can provide approximate solutions to the outflow condition of Signorini type. 1. Introduction. Our