diff --git a/tutorials/compressible/rhoPimpleFoam/ras/angledDuct/constant/porosityProperties b/tutorials/compressible/rhoPimpleFoam/ras/angledDuct/system/fvOptions
similarity index 64%
rename from tutorials/compressible/rhoPimpleFoam/ras/angledDuct/constant/porosityProperties
rename to tutorials/compressible/rhoPimpleFoam/ras/angledDuct/system/fvOptions
index 650f01268c..4a4fe08b09 100644
--- a/tutorials/compressible/rhoPimpleFoam/ras/angledDuct/constant/porosityProperties
+++ b/tutorials/compressible/rhoPimpleFoam/ras/angledDuct/system/fvOptions
@@ -10,26 +10,32 @@ FoamFile
     version     2.0;
     format      ascii;
     class       dictionary;
-    location    "constant";
-    object      porosityProperties;
+    location    "system";
+    object      fvOptions;
 }
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
 porosity1
 {
-    type            DarcyForchheimer;
-    active          yes;
+    type            explicitPorositySource;
+    active          true;
+    selectionMode   cellZone;
     cellZone        porosity;
 
-    DarcyForchheimerCoeffs
+    explicitPorositySourceCoeffs
     {
-        d   d [0 -2 0 0 0 0 0] (5e7 -1000 -1000);
-        f   f [0 -1 0 0 0 0 0] (0 0 0);
+        type            DarcyForchheimer;
 
-        coordinateSystem
+        DarcyForchheimerCoeffs
         {
-            e1  (0.70710678 0.70710678 0);
-            e2  (0 0 1);
+            d   d [0 -2 0 0 0 0 0] (5e7 -1000 -1000);
+            f   f [0 -1 0 0 0 0 0] (0 0 0);
+
+            coordinateSystem
+            {
+                e1  (0.70710678 0.70710678 0);
+                e2  (0 0 1);
+            }
         }
     }
 }
diff --git a/tutorials/compressible/rhoPimpleFoam/ras/mixerVessel2D/constant/porosityProperties b/tutorials/compressible/rhoPimpleFoam/ras/mixerVessel2D/system/fvOptions
similarity index 66%
rename from tutorials/compressible/rhoPimpleFoam/ras/mixerVessel2D/constant/porosityProperties
rename to tutorials/compressible/rhoPimpleFoam/ras/mixerVessel2D/system/fvOptions
index 1a76ef1d80..f2f9f0db33 100644
--- a/tutorials/compressible/rhoPimpleFoam/ras/mixerVessel2D/constant/porosityProperties
+++ b/tutorials/compressible/rhoPimpleFoam/ras/mixerVessel2D/system/fvOptions
@@ -10,28 +10,35 @@ FoamFile
     version     2.0;
     format      ascii;
     class       dictionary;
-    location    "constant";
-    object      porosityProperties;
+    location    "system";
+    object      fvOptions;
 }
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
 porosity1
 {
-    type            DarcyForchheimer;
+    type            explicitPorositySource;
     active          yes;
+    selectionMode   cellZone;
     cellZone        stator;
 
-    DarcyForchheimerCoeffs
+    explicitPorositySourceCoeffs
     {
-        d   d [0 -2 0 0 0 0 0] (1e5 -1000 -1000);
-        f   f [0 -1 0 0 0 0 0] (0 0 0);
+        type            DarcyForchheimer;
 
-        coordinateSystem
+        DarcyForchheimerCoeffs
         {
-            e1  (1 0 0);
-            e2  (0 1 0);
+            d   d [0 -2 0 0 0 0 0] (1e5 -1000 -1000);
+            f   f [0 -1 0 0 0 0 0] (0 0 0);
+
+            coordinateSystem
+            {
+                e1  (1 0 0);
+                e2  (0 1 0);
+            }
         }
     }
 }
 
+
 // ************************************************************************* //
diff --git a/tutorials/compressible/rhoPimplecFoam/angledDuct/constant/porosityProperties b/tutorials/compressible/rhoPimplecFoam/angledDuct/system/fvOptions
similarity index 64%
rename from tutorials/compressible/rhoPimplecFoam/angledDuct/constant/porosityProperties
rename to tutorials/compressible/rhoPimplecFoam/angledDuct/system/fvOptions
index 22add8ff29..4a4fe08b09 100644
--- a/tutorials/compressible/rhoPimplecFoam/angledDuct/constant/porosityProperties
+++ b/tutorials/compressible/rhoPimplecFoam/angledDuct/system/fvOptions
@@ -10,28 +10,35 @@ FoamFile
     version     2.0;
     format      ascii;
     class       dictionary;
-    location    "constant";
-    object      porosityProperties;
+    location    "system";
+    object      fvOptions;
 }
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
 porosity1
 {
-    type            DarcyForchheimer;
-    active          yes;
+    type            explicitPorositySource;
+    active          true;
+    selectionMode   cellZone;
     cellZone        porosity;
 
-    DarcyForchheimerCoeffs
+    explicitPorositySourceCoeffs
     {
-        d   d [0 -2 0 0 0 0 0] (5e7 -1000 -1000);
-        f   f [0 -1 0 0 0 0 0] (0 0 0);
+        type            DarcyForchheimer;
 
-        coordinateSystem
+        DarcyForchheimerCoeffs
         {
-            e1  (0.70710678 0.70710678 0);
-            e2  (0 0 1);
+            d   d [0 -2 0 0 0 0 0] (5e7 -1000 -1000);
+            f   f [0 -1 0 0 0 0 0] (0 0 0);
+
+            coordinateSystem
+            {
+                e1  (0.70710678 0.70710678 0);
+                e2  (0 0 1);
+            }
         }
     }
 }
 
+
 // ************************************************************************* //