So, no idea...

Basically things do not work. I've added a correction to the node volume
in the axis which gives okays results but still this is not perfect. I
need to find a better way to do things.

Also, I've noticed that the density changes with the size of the cells,
which should not happen! I'vw to check this issue.

src/modules/mesh/inout/gmsh2/moduleMeshInputGmsh2.f90

@@ -296,6 +296,20 @@ MODULE moduleMeshInputGmsh2
 
       CLOSE(10)
 
+      ! Adjust node volume at axis
+      SELECT CASE(self%geometry)
+      CASE("Cyl")
+        DO n  = 1, self%numNodes
+          r = self%nodes(n)%obj%getCoordinates()
+          IF (r(2) == 0.D0) THEN
+            self%nodes(n)%obj%v = self%nodes(n)%obj%v * 3.0D0/2.0D0
+
+          END IF
+
+        END DO
+
+      END SELECT
+        
       !Call mesh connectivity
       CALL self%connectMesh