|Authors:||El Behi-Gornostaeva, Elena|
|Title:||Traveling wave solutions for the Richards equation with hysteresis|
|Abstract:||We investigate the one-dimensional non-equilibrium Richards equation with play-type hysteresis. It is known that regularized versions of this equation permit traveling wave solutions that show oscillations and, in particular, the physically relevant effect of a saturation overshoot. We investigate here the non-regularized hysteresis operator and combine it with a positive τ-term. Our result is that the model has monotone traveling wave solutions. These traveling waves describe the behavior of fronts in a bounded domain. In a two-dimensional interpretation, the result characterizes the speed of fingers in non-homogeneous solutions.|
|Subject Headings:||porous media|
|Appears in Collections:||Preprints der Fakultät für Mathematik|
Schweizer, Ben Prof. Dr.
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