diff --git a/tutorials/discreteMethods/dsmcFoam/supersonicCorner/0/iDof b/tutorials/discreteMethods/dsmcFoam/supersonicCorner/0/iDof
index 4f081fa179..1e13af9370 100644
--- a/tutorials/discreteMethods/dsmcFoam/supersonicCorner/0/iDof
+++ b/tutorials/discreteMethods/dsmcFoam/supersonicCorner/0/iDof
@@ -32,7 +32,8 @@ boundaryField
 
     walls
     {
-        type            zeroGradient;
+        type            calculated;
+        value           uniform 0;
     }
 
 }
diff --git a/tutorials/discreteMethods/dsmcFoam/supersonicCorner/0/internalE b/tutorials/discreteMethods/dsmcFoam/supersonicCorner/0/internalE
index 8bf198ceae..976ec30e74 100644
--- a/tutorials/discreteMethods/dsmcFoam/supersonicCorner/0/internalE
+++ b/tutorials/discreteMethods/dsmcFoam/supersonicCorner/0/internalE
@@ -32,7 +32,8 @@ boundaryField
 
     walls
     {
-        type            zeroGradient;
+        type            calculated;
+        value           uniform 0;
     }
 }
 
diff --git a/tutorials/discreteMethods/dsmcFoam/supersonicCorner/0/linearKE b/tutorials/discreteMethods/dsmcFoam/supersonicCorner/0/linearKE
index f05be3b1c8..b26e99313c 100644
--- a/tutorials/discreteMethods/dsmcFoam/supersonicCorner/0/linearKE
+++ b/tutorials/discreteMethods/dsmcFoam/supersonicCorner/0/linearKE
@@ -32,7 +32,8 @@ boundaryField
 
     walls
     {
-        type            zeroGradient;
+        type            calculated;
+        value           uniform 0;
     }
 }
 
diff --git a/tutorials/discreteMethods/dsmcFoam/supersonicCorner/0/momentum b/tutorials/discreteMethods/dsmcFoam/supersonicCorner/0/momentum
index 244901de0c..05d234bd2a 100644
--- a/tutorials/discreteMethods/dsmcFoam/supersonicCorner/0/momentum
+++ b/tutorials/discreteMethods/dsmcFoam/supersonicCorner/0/momentum
@@ -32,7 +32,8 @@ boundaryField
 
     walls
     {
-        type            zeroGradient;
+        type            calculated;
+        value           uniform (0 0 0);
     }
 
 }
diff --git a/tutorials/discreteMethods/dsmcFoam/supersonicCorner/0/rhoM b/tutorials/discreteMethods/dsmcFoam/supersonicCorner/0/rhoM
index fa4dec993b..7ec6f3368f 100644
--- a/tutorials/discreteMethods/dsmcFoam/supersonicCorner/0/rhoM
+++ b/tutorials/discreteMethods/dsmcFoam/supersonicCorner/0/rhoM
@@ -32,7 +32,8 @@ boundaryField
 
     walls
     {
-        type            zeroGradient;
+        type            calculated;
+        value           uniform 0;
     }
 }
 
diff --git a/tutorials/discreteMethods/dsmcFoam/supersonicCorner/0/rhoN b/tutorials/discreteMethods/dsmcFoam/supersonicCorner/0/rhoN
index cd16296be9..f847c22cd0 100644
--- a/tutorials/discreteMethods/dsmcFoam/supersonicCorner/0/rhoN
+++ b/tutorials/discreteMethods/dsmcFoam/supersonicCorner/0/rhoN
@@ -32,7 +32,8 @@ boundaryField
 
     walls
     {
-        type            zeroGradient;
+        type            calculated;
+        value           uniform 0;
     }
 }
 
diff --git a/tutorials/discreteMethods/dsmcFoam/wedge15Ma5/0/iDof b/tutorials/discreteMethods/dsmcFoam/wedge15Ma5/0/iDof
index 3e8f63f7c3..b31b782ef0 100644
--- a/tutorials/discreteMethods/dsmcFoam/wedge15Ma5/0/iDof
+++ b/tutorials/discreteMethods/dsmcFoam/wedge15Ma5/0/iDof
@@ -27,7 +27,8 @@ boundaryField
 
     obstacle
     {
-        type            zeroGradient;
+        type            calculated;
+        value           uniform 0;
     }
 
     periodic
diff --git a/tutorials/discreteMethods/dsmcFoam/wedge15Ma5/0/internalE b/tutorials/discreteMethods/dsmcFoam/wedge15Ma5/0/internalE
index 4cb2411197..61e30470b9 100644
--- a/tutorials/discreteMethods/dsmcFoam/wedge15Ma5/0/internalE
+++ b/tutorials/discreteMethods/dsmcFoam/wedge15Ma5/0/internalE
@@ -27,7 +27,8 @@ boundaryField
 
     obstacle
     {
-        type            zeroGradient;
+        type            calculated;
+        value           uniform 0;
     }
 
     periodic
diff --git a/tutorials/discreteMethods/dsmcFoam/wedge15Ma5/0/linearKE b/tutorials/discreteMethods/dsmcFoam/wedge15Ma5/0/linearKE
index 72f2c152c5..b3f5a50d70 100644
--- a/tutorials/discreteMethods/dsmcFoam/wedge15Ma5/0/linearKE
+++ b/tutorials/discreteMethods/dsmcFoam/wedge15Ma5/0/linearKE
@@ -27,7 +27,8 @@ boundaryField
 
     obstacle
     {
-        type            zeroGradient;
+        type            calculated;
+        value           uniform 0;
     }
 
     periodic
diff --git a/tutorials/discreteMethods/dsmcFoam/wedge15Ma5/0/momentum b/tutorials/discreteMethods/dsmcFoam/wedge15Ma5/0/momentum
index f0e6facaef..424e0310cc 100644
--- a/tutorials/discreteMethods/dsmcFoam/wedge15Ma5/0/momentum
+++ b/tutorials/discreteMethods/dsmcFoam/wedge15Ma5/0/momentum
@@ -27,7 +27,8 @@ boundaryField
 
     obstacle
     {
-        type            zeroGradient;
+        type            calculated;
+        value           uniform (0 0 0);
     }
 
     periodic
diff --git a/tutorials/discreteMethods/dsmcFoam/wedge15Ma5/0/rhoM b/tutorials/discreteMethods/dsmcFoam/wedge15Ma5/0/rhoM
index 9a84df6fa0..224aae627a 100644
--- a/tutorials/discreteMethods/dsmcFoam/wedge15Ma5/0/rhoM
+++ b/tutorials/discreteMethods/dsmcFoam/wedge15Ma5/0/rhoM
@@ -27,7 +27,8 @@ boundaryField
 
     obstacle
     {
-        type            zeroGradient;
+        type            calculated;
+        value           uniform 0;
     }
 
     periodic
diff --git a/tutorials/discreteMethods/dsmcFoam/wedge15Ma5/0/rhoN b/tutorials/discreteMethods/dsmcFoam/wedge15Ma5/0/rhoN
index 4f948784ae..275417c995 100644
--- a/tutorials/discreteMethods/dsmcFoam/wedge15Ma5/0/rhoN
+++ b/tutorials/discreteMethods/dsmcFoam/wedge15Ma5/0/rhoN
@@ -27,7 +27,8 @@ boundaryField
 
     obstacle
     {
-        type            zeroGradient;
+        type            calculated;
+        value           uniform 0;
     }
 
     periodic