subsetMesh: Added -noFields option

With the -noFields option the mesh is subset but the fields are not changed.
This is useful when the field fields have been created to correspond to the mesh
after the mesh subset.

applications/utilities/mesh/manipulation/subsetMesh/subsetMesh.C

@@ -208,6 +208,12 @@ int main(int argc, char *argv[])
         "time",
         "specify a time for the resulting mesh"
     );
+    argList::addBoolOption
+    (
+        "noFields",
+        "do not update fields"
+    );
+
     #include "setRootCase.H"
     #include "createTime.H"
     runTime.functionObjects().off();
@@ -234,6 +240,7 @@ int main(int argc, char *argv[])
         // Set both mesh and field to this time
         meshInstance = fieldsInstance;
     }
+    const bool fields = !args.optionFound("noFields");
 
 
     Info<< "Reading cell set from " << setName << endl << endl;
@@ -268,11 +275,12 @@ int main(int argc, char *argv[])
 
 
     cellSet currentSet(mesh, setName);
-
     subsetter.setLargeCellSubset(currentSet, patchi, true);
 
-    IOobjectList objects(mesh, runTime.timeName());
 
+    if (fields)
+    {
+        IOobjectList objects(mesh, runTime.timeName());
 
         // Read vol fields and subset
         // ~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -409,7 +417,10 @@ int main(int argc, char *argv[])
         subsetDimensionedFields(subsetter, vectorDimNames, vectorDimFlds);
 
         typedef volSphericalTensorField::Internal dimSphereType;
-    wordList sphericalTensorDimNames(objects.names(dimSphereType::typeName));
+        wordList sphericalTensorDimNames
+        (
+            objects.names(dimSphereType::typeName)
+        );
         PtrList<dimSphereType> sphericalTensorDimFlds
         (
             sphericalTensorDimNames.size()
@@ -424,7 +435,12 @@ int main(int argc, char *argv[])
         typedef volSymmTensorField::Internal dimSymmTensorType;
         wordList symmTensorDimNames(objects.names(dimSymmTensorType::typeName));
         PtrList<dimSymmTensorType> symmTensorDimFlds(symmTensorDimNames.size());
-    subsetDimensionedFields(subsetter, symmTensorDimNames, symmTensorDimFlds);
+        subsetDimensionedFields
+        (
+            subsetter,
+            symmTensorDimNames,
+            symmTensorDimFlds
+        );
 
         typedef volTensorField::Internal dimTensorType;
         wordList tensorDimNames(objects.names(dimTensorType::typeName));
@@ -445,10 +461,10 @@ int main(int argc, char *argv[])
             runTime++;
         }
 
-    Info<< "Writing subsetted mesh and fields to time " << runTime.timeName()
-        << endl;
-    subsetter.subMesh().write();
+        Info<< "Writing subsetted mesh and fields to time "
+            << runTime.timeName() << endl;
 
+        subsetter.subMesh().write();
 
         // Subsetting adds 'subset' prefix. Rename field to be like original.
         forAll(scalarFlds, i)
@@ -557,7 +573,27 @@ int main(int argc, char *argv[])
             tensorDimFlds[i].rename(tensorDimNames[i]);
             tensorDimFlds[i].write();
         }
+    }
+    else
+    {
+        // Write mesh to new time
+        // ~~~~~~~~~~~~~~~~~~~~~~
 
+        if (overwrite || specifiedInstance)
+        {
+            runTime.setTime(instant(fieldsInstance), 0);
+            subsetter.subMesh().setInstance(meshInstance);
+        }
+        else
+        {
+            runTime++;
+        }
+
+        Info<< "Writing subsetted mesh to time "
+            << runTime.timeName() << endl;
+
+        subsetter.subMesh().write();
+    }
 
     Info<< "End\n" << endl;
 

tutorials/lagrangian/reactingParcelFoam/hotBoxes/Allmesh

@@ -6,16 +6,16 @@ cd ${0%/*} || exit 1    # Run from this directory
 
 rm -rf 0
 
-# create the underlying block mesh
+# Create the underlying block mesh
 runApplication blockMesh
 
-# create the set for the obstacles
+# Create the set for the obstacles
 runApplication topoSet
 
-# create the obstacles - add obstacle patches to wallFilm patch
-runApplication subsetMesh c0 -patch wallFilm -overwrite
+# Create the obstacles - add obstacle patches to wallFilm patch
+runApplication subsetMesh c0 -patch wallFilm -overwrite -noFields
 
-# split the obstacle patches into cube[1-6]_patch[1-6]
+# Split the obstacle patches into cube[1-6]_patch[1-6]
 runApplication ./patchifyObstacles
 
 # Create the wall film region via extrusion
@@ -25,9 +25,6 @@ runApplication extrudeToRegionMesh -overwrite
 rm -rf system/wallFilmRegion
 cp -r system/wallFilmRegion.orig system/wallFilmRegion
 
-find ./0 -maxdepth 1 -type f -exec \
-    sed -i -e "s/wallFilm/\"(region0_to.*)\"/g" {} \;
-
 paraFoam -touch
 paraFoam -touch -region wallFilmRegion
 

tutorials/multiphase/interFoam/RAS/floatingObject/Allrun

@@ -9,7 +9,7 @@ application=$(getApplication)
 
 runApplication blockMesh
 runApplication topoSet
-runApplication subsetMesh -overwrite c0 -patch floatingObject
+runApplication subsetMesh -overwrite c0 -patch floatingObject -noFields
 runApplication setFields
 runApplication $application
 

tutorials/multiphase/interFoam/laminar/damBreakWithObstacle/Allrun

@@ -6,7 +6,7 @@ cd ${0%/*} || exit 1    # Run from this directory
 
 runApplication blockMesh
 runApplication topoSet
-runApplication subsetMesh -overwrite c0 -patch walls
+runApplication subsetMesh -overwrite c0 -patch walls -noFields
 runApplication setFields
 runApplication $(getApplication)
 

tutorials/multiphase/potentialFreeSurfaceFoam/movingOscillatingBox/Allrun

@@ -11,7 +11,7 @@ runApplication blockMesh
 
 runApplication -s 1  topoSet
 
-runApplication subsetMesh -overwrite c0 -patch floatingObject
+runApplication subsetMesh -overwrite c0 -patch floatingObject -noFields
 
 runApplication -s selectBottom \
     topoSet -dict system/topoSetDict-selectBottom

tutorials/multiphase/potentialFreeSurfaceFoam/oscillatingBox/Allrun

@@ -9,7 +9,7 @@ application=$(getApplication)
 
 runApplication blockMesh
 runApplication topoSet
-runApplication subsetMesh -overwrite c0 -patch floatingObject
+runApplication subsetMesh -overwrite c0 -patch floatingObject -noFields
 
 runApplication $application