diff --git a/src/meshTools/Make/files b/src/meshTools/Make/files
index d6dd0ec9f27c1609037c2b9f04f32bf3fe117393..bb5e356a0ea53a9adc8d0072cf670f8f75b01c73 100644
--- a/src/meshTools/Make/files
+++ b/src/meshTools/Make/files
@@ -55,6 +55,8 @@ $(meshWave)/FaceCellWaveName.C
regionSplit/regionSplit.C
regionSplit/localPointRegion.C
+regionSplit2D/regionSplit2D.C
+
indexedOctree/treeDataEdge.C
indexedOctree/treeDataFace.C
indexedOctree/treeDataPoint.C
diff --git a/src/meshTools/regionSplit2D/regionSplit2D.C b/src/meshTools/regionSplit2D/regionSplit2D.C
new file mode 100644
index 0000000000000000000000000000000000000000..aca03a82f52bbef98c1a1751f40f3b81ca913ef4
--- /dev/null
+++ b/src/meshTools/regionSplit2D/regionSplit2D.C
@@ -0,0 +1,146 @@
+/*---------------------------------------------------------------------------*\
+ ========= |
+ \\ / F ield | OpenFOAM: The Open Source CFD Toolbox
+ \\ / O peration |
+ \\ / A nd | Copyright (C) 2015 OpenCFD Ltd.
+ \\/ M anipulation |
+-------------------------------------------------------------------------------
+License
+ This file is part of OpenFOAM.
+
+ OpenFOAM is free software: you can redistribute it and/or modify it
+ under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
+ ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
+
+\*---------------------------------------------------------------------------*/
+
+#include "regionSplit2D.H"
+#include "polyMesh.H"
+#include "PatchEdgeFaceWave.H"
+#include "Time.H"
+
+// * * * * * * * * * * * * * * * * Constructor * * * * * * * * * * * * * * * //
+
+Foam::regionSplit2D::regionSplit2D
+(
+ const polyMesh& mesh,
+ const indirectPrimitivePatch& patch,
+ const boolList& blockedFaces,
+ const label offset
+)
+:
+ labelList(patch.size(), -1),
+ nRegions_(0)
+{
+ globalIndex globalFaces(blockedFaces.size());
+ label regionI = globalFaces.toGlobal(0);
+ List<patchEdgeFaceRegion> allEdgeInfo(patch.nEdges());
+ List<patchEdgeFaceRegion> allFaceInfo(patch.size());
+ DynamicList<label> changedEdges;
+ DynamicList<patchEdgeFaceRegion> changedRegions;
+ label nBlockedFaces = 0;
+ forAll(blockedFaces, faceI)
+ {
+ if (blockedFaces[faceI])
+ {
+ const labelList& fEdges = patch.faceEdges()[faceI];
+ forAll(fEdges, feI)
+ {
+ changedEdges.append(fEdges[feI]);
+
+ // Append globally unique value
+ changedRegions.append(regionI);
+ }
+ nBlockedFaces++;
+ regionI++;
+ }
+ else
+ {
+ // Block all non-seeded faces from the walk
+ allFaceInfo[faceI] = -2;
+ }
+ }
+
+ // Early exit if there are no blocked faces
+ if (returnReduce(nBlockedFaces, sumOp<label>()) == 0)
+ {
+ return;
+ }
+
+ PatchEdgeFaceWave
+ <
+ indirectPrimitivePatch,
+ patchEdgeFaceRegion
+ >
+ (
+ mesh,
+ patch,
+ changedEdges,
+ changedRegions,
+ allEdgeInfo,
+ allFaceInfo,
+ returnReduce(patch.nEdges(), sumOp<label>())
+ );
+
+
+ // Map from regions to local compact indexing
+ // - only for regions that originate from this processor
+ Map<label> regionToCompactAddr(changedRegions.size());
+ label compactRegionI = 0;
+ forAll(allFaceInfo, faceI)
+ {
+ label regionI = allFaceInfo[faceI].region();
+ if
+ (
+ globalFaces.isLocal(regionI)
+ && regionToCompactAddr.insert(regionI, compactRegionI)
+ )
+ {
+ compactRegionI++;
+ }
+ }
+
+ // In-place renumber the local regionI to global (compact) regionI
+ globalIndex giCompact(compactRegionI);
+ forAllIter(Map<label>, regionToCompactAddr, iter)
+ {
+ label compactRegionI = iter();
+ iter() = giCompact.toGlobal(compactRegionI);
+ }
+
+ // Ensure regionToCompactAddr consistent across all processors
+ // - not concerned about the op (keys are unique)
+ // - map size will be the number of regions in the set of faces
+ Pstream::mapCombineGather(regionToCompactAddr, minEqOp<label>());
+ Pstream::mapCombineScatter(regionToCompactAddr);
+
+ nRegions_ = regionToCompactAddr.size();
+
+ // Set the region index per face
+ forAll(allFaceInfo, faceI)
+ {
+ label regionI = allFaceInfo[faceI].region();
+ if (regionI >= 0)
+ {
+ this->operator[](faceI) = regionToCompactAddr[regionI] + offset;
+ }
+ }
+}
+
+
+// * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
+
+Foam::regionSplit2D::~regionSplit2D()
+{}
+
+
+// ************************************************************************* //
diff --git a/src/meshTools/regionSplit2D/regionSplit2D.H b/src/meshTools/regionSplit2D/regionSplit2D.H
new file mode 100644
index 0000000000000000000000000000000000000000..b6ef225ffc860d02b4fdf435380e6d5d34ebb34a
--- /dev/null
+++ b/src/meshTools/regionSplit2D/regionSplit2D.H
@@ -0,0 +1,113 @@
+/*---------------------------------------------------------------------------*\
+ ========= |
+ \\ / F ield | OpenFOAM: The Open Source CFD Toolbox
+ \\ / O peration |
+ \\ / A nd | Copyright (C) 2015 OpenCFD Ltd.
+ \\/ M anipulation |
+-------------------------------------------------------------------------------
+License
+ This file is part of OpenFOAM.
+
+ OpenFOAM is free software: you can redistribute it and/or modify it
+ under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
+ ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
+
+Class
+ Foam::regionSplit2D
+
+Description
+ Splits a patch into regions based on a mask field. Result is a globally
+ consistent label list of region index per patch face.
+
+SourceFiles
+ regionSplit2D.C
+
+\*---------------------------------------------------------------------------*/
+
+#ifndef regionSplit2D_H
+#define regionSplit2D_H
+
+#include "DynamicList.H"
+#include "boolList.H"
+#include "labelList.H"
+#include "indirectPrimitivePatch.H"
+#include "patchEdgeFaceRegion.H"
+#include "globalIndex.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace Foam
+{
+
+class faceZone;
+class polyMesh;
+
+/*---------------------------------------------------------------------------*\
+ Class regionSplit2D Declaration
+\*---------------------------------------------------------------------------*/
+
+class regionSplit2D
+:
+ public labelList
+{
+ // Private data
+
+ //- Number of regions
+ label nRegions_;
+
+
+ // Private Member Functions
+
+ //- Disallow default bitwise copy construct
+ regionSplit2D(const regionSplit2D&);
+
+ //- Disallow default bitwise assignment
+ void operator=(const regionSplit2D&);
+
+
+public:
+
+ // Constructors
+
+ //- Construct from mesh and list of blocked faces
+ regionSplit2D
+ (
+ const polyMesh& mesh,
+ const indirectPrimitivePatch& patch,
+ const boolList& blockedFaces,
+ const label offset = 0
+ );
+
+
+ //- Destructor
+ ~regionSplit2D();
+
+
+ // Member Functions
+
+ //- Return the number of regions
+ label nRegions() const
+ {
+ return nRegions_;
+ }
+};
+
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+} // End namespace Foam
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+#endif
+
+// ************************************************************************* //