Dear DuMuX experts, I wonder what can be the reason for the following strange behavior I observe with a simple waterflooding simulation.
It is a water injection into an oil-saturated 2D block, the fluids are considered as incompressible. Dirichlet boundary conditions are imposed at left and right boundaries, whereas there are no-flow at top and bottom boundaries. Brooks-Corey relative permeabilities and capillary pressure curve are used. Despite the fact, that the boundary conditions are set for the wetting phase pressure, the pressure values at the boundary appear to be quite different from the prescribed ones in case of non-zero capillary pressure. If Pc=0, the pressure boundary values do take the values prescribed in the problem formulation. The project is available at https://git.iws.uni-stuttgart.de/andrian/rate-sens-nofrac, and I would appreciate if you could comment on what's going wrong. Thanks, Nikolai PS: I work with the dumux-course branch.
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