[spatialparams] Add porosity as input parameter

appl/coupled/stokes_darcy/channel/params.input

@@ -27,6 +27,7 @@ NumericDifference.BaseEpsilon = 1e-8
 Problem.Name = darcy
 SpatialParams.Permeability = 1e-4
 SpatialParams.AlphaBeaversJoseph = 1.0
+SpatialParams.Porosity = 0.4
 
 [Vtk]
 WriteFaceData = false

appl/coupled/stokes_darcy/channel/spatialparams.hh

@@ -56,6 +56,7 @@ public:
     {
         permeability_ = getParam<Scalar>("Darcy.SpatialParams.Permeability");
         alphaBJ_ = getParam<Scalar>("Darcy.SpatialParams.AlphaBeaversJoseph");
+        porosity_ = getParam<Scalar>("Darcy.SpatialParams.Porosity");
     }
 
     /*!
@@ -72,7 +73,7 @@ public:
      * \param globalPos The global position
      */
     Scalar porosityAtPos(const GlobalPosition& globalPos) const
-    { return 0.4; }
+    { return porosity_; }
 
     /*! \brief Defines the Beavers-Joseph coefficient in [-].
      *
@@ -85,6 +86,7 @@ public:
 private:
     Scalar permeability_;
     Scalar alphaBJ_;
+    Scalar porosity_;
 };
 
 } // end namespace Dumux

appl/coupled/stokes_darcy/filter/params.input

@@ -27,6 +27,7 @@ NumericDifference.BaseEpsilon = 1e-8
 Problem.Name = darcy_filter
 SpatialParams.Permeability = 1e-2
 SpatialParams.AlphaBeaversJoseph = 1.0
+SpatialParams.Porosity = 0.4
 
 [Vtk]
 WriteFaceData = false

appl/coupled/stokes_darcy/filter/spatialparams.hh

@@ -56,6 +56,7 @@ public:
     {
         permeability_ = getParam<Scalar>("Darcy.SpatialParams.Permeability");
         alphaBJ_ = getParam<Scalar>("Darcy.SpatialParams.AlphaBeaversJoseph");
+        porosity_ = getParam<Scalar>("Darcy.SpatialParams.Porosity");
     }
 
     /*!
@@ -72,7 +73,7 @@ public:
      * \param globalPos The global position
      */
     Scalar porosityAtPos(const GlobalPosition& globalPos) const
-    { return 0.4; }
+    { return porosity_; }
 
     /*! \brief Defines the Beavers-Joseph coefficient in [-].
      *
@@ -85,6 +86,7 @@ public:
 private:
     Scalar permeability_;
     Scalar alphaBJ_;
+    Scalar porosity_;
 };
 
 } // end namespace Dumux