STYLE: use zero-gradient for cellDist field (reconstructParMesh)

- consistent with what decomposePar and redistributePar create

applications/utilities/parallelProcessing/reconstructParMesh/reconstructParMesh.C

@@ -69,7 +69,7 @@ Usage
 #include "faceCoupleInfo.H"
 #include "fvMeshAdder.H"
 #include "polyTopoChange.H"
-#include "extrapolatedCalculatedFvPatchFields.H"
+#include "zeroGradientFvPatchFields.H"
 #include "topoSet.H"
 #include "regionProperties.H"
 #include "fvMeshTools.H"
@@ -399,8 +399,8 @@ void writeDistribution
         << cellDecomposition.objectRelPath()
         << " for use in manual decomposition." << endl;
 
-    // Write as volScalarField for postprocessing. Change time to 0
+    // Write as volScalarField for postprocessing.
-    // if was 'constant'
+    // Change time to 0 if was 'constant'
     {
         const scalar oldTime = runTime.value();
         const label oldIndex = runTime.timeIndex();
@@ -421,8 +421,8 @@ void writeDistribution
                 false
             ),
             masterMesh,
-            dimensionedScalar(dimless, Zero),
+            dimensionedScalar("cellDist", dimless, -1),
-            extrapolatedCalculatedFvPatchScalarField::typeName
+            zeroGradientFvPatchScalarField::typeName
         );
 
         forAll(cellDecomposition, celli)

applications/utilities/parallelProcessing/redistributePar/redistributePar.C

@@ -414,7 +414,7 @@ void writeDecomposition
             mesh.time().timeName(),
             mesh,
             IOobject::NO_READ,
-            IOobject::AUTO_WRITE,
+            IOobject::NO_WRITE,
             false                   // do not register
         ),
         mesh,
@@ -422,9 +422,9 @@ void writeDecomposition
         zeroGradientFvPatchScalarField::typeName
     );
 
-    forAll(procCells, cI)
+    forAll(procCells, celli)
     {
-        procCells[cI] = decomp[cI];
+        procCells[celli] = decomp[celli];
     }
 
     procCells.correctBoundaryConditions();