diff --git a/tutorials/heatTransfer/chtMultiRegionFoam/externalCoupledHeater/constant/g b/tutorials/heatTransfer/chtMultiRegionFoam/externalCoupledHeater/constant/g
deleted file mode 120000
index fea3757006..0000000000
--- a/tutorials/heatTransfer/chtMultiRegionFoam/externalCoupledHeater/constant/g
+++ /dev/null
@@ -1 +0,0 @@
-../bottomWater/g
\ No newline at end of file
diff --git a/tutorials/heatTransfer/chtMultiRegionFoam/externalCoupledHeater/constant/g b/tutorials/heatTransfer/chtMultiRegionFoam/externalCoupledHeater/constant/g
new file mode 100644
index 0000000000..dda4a9c6d0
--- /dev/null
+++ b/tutorials/heatTransfer/chtMultiRegionFoam/externalCoupledHeater/constant/g
@@ -0,0 +1,20 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  v1806                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.com                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       uniformDimensionedVectorField;
+    object      g;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+dimensions      [0 1 -2 0 0 0 0];
+value           (0 -9.81 0);
+
+// ************************************************************************* //
diff --git a/tutorials/heatTransfer/chtMultiRegionFoam/externalCoupledHeater/system/decomposeParDict b/tutorials/heatTransfer/chtMultiRegionFoam/externalCoupledHeater/system/decomposeParDict
index e8c69a5d1a..e7499e7647 100644
--- a/tutorials/heatTransfer/chtMultiRegionFoam/externalCoupledHeater/system/decomposeParDict
+++ b/tutorials/heatTransfer/chtMultiRegionFoam/externalCoupledHeater/system/decomposeParDict
@@ -19,12 +19,10 @@ numberOfSubdomains  4;
 method          scotch;
 // method          hierarchical;
 // method          simple;
-// method          manual;
 
 coeffs
 {
     n           (2 2 1);
-    dataFile    "decompositionData";
 }
 
 
diff --git a/tutorials/heatTransfer/chtMultiRegionFoam/externalCoupledHeater/system/topAir/changeDictionaryDict b/tutorials/heatTransfer/chtMultiRegionFoam/externalCoupledHeater/system/topAir/changeDictionaryDict
index 5c6eb12ddd..47a955d182 100644
--- a/tutorials/heatTransfer/chtMultiRegionFoam/externalCoupledHeater/system/topAir/changeDictionaryDict
+++ b/tutorials/heatTransfer/chtMultiRegionFoam/externalCoupledHeater/system/topAir/changeDictionaryDict
@@ -36,13 +36,13 @@ U
         minX
         {
             type            fixedValue;
-            value           uniform ( 0.1 0 0 );
+            value           uniform (0.1 0 0);
         }
         maxX
         {
             type            inletOutlet;
-            inletValue      uniform ( 0 0 0 );
-            value           uniform ( 0.1 0 0 );
+            inletValue      uniform (0 0 0);
+            value           uniform (0.1 0 0);
         }
     }
 }
diff --git a/tutorials/heatTransfer/chtMultiRegionFoam/externalCoupledHeater/system/topoSetDict b/tutorials/heatTransfer/chtMultiRegionFoam/externalCoupledHeater/system/topoSetDict
index 4f160b93ad..2862ad715d 100644
--- a/tutorials/heatTransfer/chtMultiRegionFoam/externalCoupledHeater/system/topoSetDict
+++ b/tutorials/heatTransfer/chtMultiRegionFoam/externalCoupledHeater/system/topoSetDict
@@ -23,14 +23,14 @@ actions
         type    cellSet;
         action  new;
         source  boxToCell;
-        box     (-0.01001 0 -100 )(0.01001 0.00999 100);
+        box     (-0.01001 0 -100) (0.01001 0.00999 100);
     }
     {
         name    heaterCellSet;
         type    cellSet;
         action  add;
         source  boxToCell;
-        box     (-0.01001 -100 -0.01001)(0.01001 0.00999 0.01001);
+        box     (-0.01001 -100 -0.01001) (0.01001 0.00999 0.01001);
     }
     {
         name    heater;
@@ -46,7 +46,7 @@ actions
         type    cellSet;
         action  new;
         source  boxToCell;
-        box     (-100 0 -100 )(-0.01001 0.00999 100);
+        box     (-100 0 -100) (-0.01001 0.00999 100);
     }
     {
         name    leftSolid;
@@ -62,7 +62,7 @@ actions
         type    cellSet;
         action  new;
         source  boxToCell;
-        box     (0.01001 0 -100 )(100 0.00999 100);
+        box     (0.01001 0 -100) (100 0.00999 100);
     }
     {
         name    rightSolid;
@@ -78,7 +78,7 @@ actions
         type    cellSet;
         action  new;
         source  boxToCell;
-        box     (-100 0.00999 -100 )(100 100 100);
+        box     (-100 0.00999 -100) (100 100 100);
     }
     {
         name    topAir;
diff --git a/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/0.orig/T b/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/0.orig/T
index 1574a6a6e7..7172bb4e37 100644
--- a/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/0.orig/T
+++ b/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/0.orig/T
@@ -23,7 +23,7 @@ boundaryField
     ".*"
     {
         type            calculated;
-        value           uniform 300;
+        value           $internalField;
     }
 }
 
diff --git a/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/0.orig/U b/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/0.orig/U
index f3a5da6b83..b5671e3fe9 100644
--- a/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/0.orig/U
+++ b/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/0.orig/U
@@ -23,7 +23,7 @@ boundaryField
     ".*"
     {
         type            calculated;
-        value           uniform (0.01 0 0);
+        value           $internalField;
     }
 }
 
diff --git a/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/0.orig/epsilon b/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/0.orig/epsilon
index 6e24054680..1685a2d801 100644
--- a/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/0.orig/epsilon
+++ b/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/0.orig/epsilon
@@ -23,9 +23,8 @@ boundaryField
     ".*"
     {
         type            calculated;
-        value           uniform 0.01;
+        value           $internalField;
     }
 }
 
-
 // ************************************************************************* //
diff --git a/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/0.orig/k b/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/0.orig/k
index c799a70d60..1d75d1d0c1 100644
--- a/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/0.orig/k
+++ b/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/0.orig/k
@@ -23,9 +23,8 @@ boundaryField
     ".*"
     {
         type            calculated;
-        value           uniform 0.1;
+        value           $internalField;
     }
 }
 
-
 // ************************************************************************* //
diff --git a/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/0.orig/p b/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/0.orig/p
index 648fc517ac..1c3b241f08 100644
--- a/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/0.orig/p
+++ b/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/0.orig/p
@@ -23,7 +23,7 @@ boundaryField
     ".*"
     {
         type            calculated;
-        value           uniform 1e5;
+        value           $internalField;
     }
 }
 
diff --git a/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/0.orig/p_rgh b/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/0.orig/p_rgh
index 32f749a80a..df0c413d7b 100644
--- a/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/0.orig/p_rgh
+++ b/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/0.orig/p_rgh
@@ -23,7 +23,7 @@ boundaryField
     ".*"
     {
         type            calculated;
-        value           uniform 1e5;
+        value           $internalField;
     }
 }
 
diff --git a/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/Allrun b/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/Allrun
index efb377ca89..efa35f3218 100755
--- a/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/Allrun
+++ b/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/Allrun
@@ -2,7 +2,7 @@
 cd ${0%/*} || exit 1                        # Run from this directory
 . $WM_PROJECT_DIR/bin/tools/RunFunctions    # Tutorial run functions
 
-runApplication ./Allmesh
+runApplication ./Allrun.pre
 
 #-- Run on single processor
 #runApplication $(getApplication)
diff --git a/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/Allmesh b/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/Allrun.pre
similarity index 100%
rename from tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/Allmesh
rename to tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/Allrun.pre
diff --git a/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/system/bottomWater/fvSchemes b/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/system/bottomWater/fvSchemes
index 51595613b0..8e42903fcc 100644
--- a/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/system/bottomWater/fvSchemes
+++ b/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/system/bottomWater/fvSchemes
@@ -53,4 +53,5 @@ snGradSchemes
     default         corrected;
 }
 
+
 // ************************************************************************* //
diff --git a/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/system/decomposeParDict b/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/system/decomposeParDict
index 1a60e0cdbd..978e6b5432 100644
--- a/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/system/decomposeParDict
+++ b/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/system/decomposeParDict
@@ -19,14 +19,13 @@ numberOfSubdomains  4;
 method          scotch;
 // method          hierarchical;
 // method          simple;
-// method          manual;
 
 regions
 {
     heater
     {
         numberOfSubdomains  1;
-        method          simple; // none;
+        method      simple; // none;
 
         coeffs
         {
diff --git a/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/system/heater/changeDictionaryDict b/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/system/heater/changeDictionaryDict
index 57e6cda6d9..f73f69320a 100644
--- a/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/system/heater/changeDictionaryDict
+++ b/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/system/heater/changeDictionaryDict
@@ -19,6 +19,7 @@ boundary
     minY
     {
         type            patch;
+        inGroups        (coupleGroup);
     }
     minZ
     {
diff --git a/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/system/topAir/changeDictionaryDict b/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/system/topAir/changeDictionaryDict
index 84b496dd8a..47a955d182 100644
--- a/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/system/topAir/changeDictionaryDict
+++ b/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/system/topAir/changeDictionaryDict
@@ -14,6 +14,14 @@ FoamFile
 }
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
+boundary
+{
+    minX
+    {
+        inGroups        (coupleGroup);
+    }
+}
+
 U
 {
     internalField   uniform (0.1 0 0);
diff --git a/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/system/topoSetDict b/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/system/topoSetDict
index 21a04248b8..2862ad715d 100644
--- a/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/system/topoSetDict
+++ b/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/system/topoSetDict
@@ -23,14 +23,14 @@ actions
         type    cellSet;
         action  new;
         source  boxToCell;
-        box     (-0.01001 0 -100)(0.01001 0.00999 100);
+        box     (-0.01001 0 -100) (0.01001 0.00999 100);
     }
     {
         name    heaterCellSet;
         type    cellSet;
         action  add;
         source  boxToCell;
-        box     (-0.01001 -100 -0.01001)(0.01001 0.00999 0.01001);
+        box     (-0.01001 -100 -0.01001) (0.01001 0.00999 0.01001);
     }
     {
         name    heater;
@@ -46,7 +46,7 @@ actions
         type    cellSet;
         action  new;
         source  boxToCell;
-        box     (-100 0 -100 )(-0.01001 0.00999 100);
+        box     (-100 0 -100) (-0.01001 0.00999 100);
     }
     {
         name    leftSolid;
@@ -62,7 +62,7 @@ actions
         type    cellSet;
         action  new;
         source  boxToCell;
-        box     (0.01001 0 -100 )(100 0.00999 100);
+        box     (0.01001 0 -100) (100 0.00999 100);
     }
     {
         name    rightSolid;
@@ -78,7 +78,7 @@ actions
         type    cellSet;
         action  new;
         source  boxToCell;
-        box     (-100 0.00999 -100 )(100 100 100);
+        box     (-100 0.00999 -100) (100 100 100);
     }
     {
         name    topAir;
diff --git a/tutorials/heatTransfer/chtMultiRegionSimpleFoam/jouleHeatingSolid/constant/g b/tutorials/heatTransfer/chtMultiRegionSimpleFoam/jouleHeatingSolid/constant/g
new file mode 100644
index 0000000000..dda4a9c6d0
--- /dev/null
+++ b/tutorials/heatTransfer/chtMultiRegionSimpleFoam/jouleHeatingSolid/constant/g
@@ -0,0 +1,20 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  v1806                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.com                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       uniformDimensionedVectorField;
+    object      g;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+dimensions      [0 1 -2 0 0 0 0];
+value           (0 -9.81 0);
+
+// ************************************************************************* //
diff --git a/tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/constant/g b/tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/constant/g
new file mode 100644
index 0000000000..388cb56d7b
--- /dev/null
+++ b/tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/constant/g
@@ -0,0 +1,20 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  v1806                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.com                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       uniformDimensionedVectorField;
+    object      g;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+dimensions      [0 1 -2 0 0 0 0];
+value           (0 0 -9.81);
+
+// ************************************************************************* //