[properties] Add new property to eval permeabilty at scvf ip

dumux/implicit/properties.hh

@@ -98,6 +98,7 @@ NEW_PROP_TAG(SolutionDependentMolecularDiffusion); //!< specifies if the paramet
 NEW_PROP_TAG(EnableEnergyBalance); //! Specifies if the model solves an energy equation
 NEW_PROP_TAG(HeatConductionType); //! The type for the calculation of the heat conduction fluxes
 NEW_PROP_TAG(SolutionDependentHeatConduction); //!< specifies if the parameters for the heat conduction fluxes depend on the solution
+NEW_PROP_TAG(EvaluatePermeabilityAtScvfIP); //!< if the permeability has to be evaluated at the scvf integration point (for evaluating analytical fields)
 
 // vtk output
 NEW_PROP_TAG(VtkAddVelocity); //!< specifies if an element velocity it reconstructed for the output

dumux/implicit/propertydefaults.hh

@@ -158,6 +158,9 @@ SET_BOOL_PROP(ImplicitBase, SolutionDependentAdvection, true);
 SET_BOOL_PROP(ImplicitBase, SolutionDependentMolecularDiffusion, true);
 SET_BOOL_PROP(ImplicitBase, SolutionDependentHeatConduction, true);
 
+//! by default we consider discontinous (at scvfs) permeability fields
+SET_BOOL_PROP(ImplicitBase, EvaluatePermeabilityAtScvfIP, false);
+
 //! by default, boundary conditions are not constant over time
 SET_BOOL_PROP(ImplicitBase, ConstantBoundaryConditions, false);