ENH: Don't break on the first repeated bad faceSet.

User controlled repeat limit.

src/mesh/conformalVoronoiMesh/conformalVoronoiMesh/conformalVoronoiMeshCalcDualMesh.C

@@ -140,6 +140,8 @@ void Foam::conformalVoronoiMesh::calcDualMesh
 
             labelHashSet lastWrongFaces;
 
+            label nConsecutiveEqualFaceSets = 0;
+
             do
             {
                 // Reindexing the Delaunay cells and regenerating the
@@ -177,9 +179,21 @@ void Foam::conformalVoronoiMesh::calcDualMesh
                 if (lastWrongFaces == wrongFaces)
                 {
                     Info<< nl << "Consecutive iterations found the same set "
-                        << "of bad quality faces, stopping filtering" << endl;
+                        << "of bad quality faces." << endl;
 
-                    break;
+                    if
+                    (
+                        ++nConsecutiveEqualFaceSets
+                     >= cvMeshControls().maxConsecutiveEqualFaceSets()
+                    )
+                    {
+                        Info<< nl << nConsecutiveEqualFaceSets
+                            << " consecutive iterations produced the same "
+                            << " bad quality faceSet, stopping filtering"
+                            << endl;
+
+                        break;
+                    }
                 }
                 else
                 {

src/mesh/conformalVoronoiMesh/cvControls/cvControls.C

@@ -296,6 +296,11 @@ Foam::cvControls::cvControls
         filteringDict.lookup("maxCollapseIterations")
     );
 
+    maxConsecutiveEqualFaceSets_ = readLabel
+    (
+        filteringDict.lookup("maxConsecutiveEqualFaceSets")
+    );
+
     surfaceStepFaceAngle_ = readScalar
     (
         filteringDict.lookup("surfaceStepFaceAngle")

src/mesh/conformalVoronoiMesh/cvControls/cvControls.H

@@ -242,6 +242,11 @@ class cvControls
         //  around it need to be collapsed.
         label maxCollapseIterations_;
 
+        //- Maximum number of times an to allow an equal faceSet to be
+        //  returned from the face quality assessment before stopping iterations
+        //  to break an infinitie loop.
+        label maxConsecutiveEqualFaceSets_;
+
         //- The maximum allowed angle between a boundary face normal and the
         //  local surface normal before face will be aggressively collapsed
         scalar surfaceStepFaceAngle_;
@@ -387,6 +392,9 @@ public:
             //- Return the maxCollapseIterations
             inline label maxCollapseIterations() const;
 
+            //- Return the maxConsecutiveEqualFaceSets
+            inline label maxConsecutiveEqualFaceSets() const;
+
             //- Return the filterCountSkipThreshold
             inline label filterCountSkipThreshold() const;
 

src/mesh/conformalVoronoiMesh/cvControls/cvControlsI.H

@@ -170,6 +170,12 @@ inline Foam::label Foam::cvControls::maxCollapseIterations() const
 }
 
 
+inline Foam::label Foam::cvControls::maxConsecutiveEqualFaceSets() const
+{
+    return maxConsecutiveEqualFaceSets_;
+}
+
+
 inline Foam::scalar Foam::cvControls::surfaceStepFaceAngle() const
 {
     return surfaceStepFaceAngle_;