BUG: nearWallFields: incorrect sampling location. Fixes #1464.

It was tracking to find the wanted sampling location. This tracking
was using the offsetted seed point instead of the offsetted wanted
sampling point.

src/functionObjects/field/nearWallFields/nearWallFields.C

@@ -78,6 +78,7 @@ void Foam::functionObjects::nearWallFields::calcAddressing()
         const vectorField nf(patch.nf());
         const vectorField faceCellCentres(patch.patch().faceCellCentres());
         const labelUList& faceCells = patch.patch().faceCells();
+        const vectorField::subField& faceCentres = patch.patch().faceCentres();
 
         forAll(patch, patchFacei)
         {
@@ -129,7 +130,11 @@ void Foam::functionObjects::nearWallFields::calcAddressing()
                 start = faceCellCentres[patchFacei];
             }
 
-            const point end = start-distance_*nf[patchFacei];
+
+            // TBD: why use start? and not faceCentres[patchFacei]
+            //const point end = start-distance_*nf[patchFacei];
+            const point end = faceCentres[patchFacei]-distance_*nf[patchFacei];
+
 
             // Add a particle to the cloud with originating face as passive data
             cloud.addParticle

src/functionObjects/field/nearWallFields/nearWallFieldsTemplates.C

@@ -62,9 +62,17 @@ void Foam::functionObjects::nearWallFields::createFields
                 IOobject io(fld);
                 io.readOpt() = IOobject::NO_READ;
                 io.writeOpt() = IOobject::NO_WRITE;
+
+                // Override bc to be calculated
+                wordList fldTypes(fld.boundaryField().types());
+                for (const label patchi : patchSet_)
+                {
+                    fldTypes[patchi] = calculatedFvPatchField<Type>::typeName;
+                }
+
                 io.rename(sampleFldName);
 
-                sflds.set(sz, new VolFieldType(io, fld));
+                sflds.set(sz, new VolFieldType(io, fld, fldTypes));
 
                 Log << "    created " << sflds[sz].name()
                     << " to sample " << fld.name() << endl;