diff --git a/constant/polyMesh/blockMeshDict b/constant/polyMesh/blockMeshDict
index da860fc..18dce07 100644
--- a/constant/polyMesh/blockMeshDict
+++ b/constant/polyMesh/blockMeshDict
@@ -25,20 +25,29 @@ vertices
 (  4.9998096153209e+00 -5.0000000000000e+00  4.3632677491870e-02 ) // 4
 (  4.9998096153209e+00  5.0000000000000e+00  4.3632677491870e-02 ) // 5
 (  4.9998096153209e+00 -5.0000000000000e+00 -4.3632677491870e-02 ) // 6
-(  3.9998476922567e+01 -5.0000000000000e+00 -3.4906141993496e-01 ) // 7
-(  3.9998476922567e+01  5.0000000000000e+00 -3.4906141993496e-01 ) // 8
+(  9.9996192306417e+00 -5.0000000000000e+00 -8.7265354983739e-02 ) // 7
+(  9.9996192306417e+00  5.0000000000000e+00 -8.7265354983739e-02 ) // 8
 (  4.9998096153209e+00  5.0000000000000e+00 -4.3632677491870e-02 ) // 9
 (  4.9998096153209e+00 -5.0000000000000e+00  4.3632677491870e-02 ) // 10
-(  3.9998476922567e+01 -5.0000000000000e+00  3.4906141993496e-01 ) // 11
-(  3.9998476922567e+01  5.0000000000000e+00  3.4906141993496e-01 ) // 12
+(  9.9996192306417e+00 -5.0000000000000e+00  8.7265354983739e-02 ) // 11
+(  9.9996192306417e+00  5.0000000000000e+00  8.7265354983739e-02 ) // 12
 (  4.9998096153209e+00  5.0000000000000e+00  4.3632677491870e-02 ) // 13
+(  9.9996192306417e+00 -5.0000000000000e+00 -8.7265354983739e-02 ) // 14
+(  3.9998476922567e+01 -5.0000000000000e+00 -3.4906141993496e-01 ) // 15
+(  3.9998476922567e+01  5.0000000000000e+00 -3.4906141993496e-01 ) // 16
+(  9.9996192306417e+00  5.0000000000000e+00 -8.7265354983739e-02 ) // 17
+(  9.9996192306417e+00 -5.0000000000000e+00  8.7265354983739e-02 ) // 18
+(  3.9998476922567e+01 -5.0000000000000e+00  3.4906141993496e-01 ) // 19
+(  3.9998476922567e+01  5.0000000000000e+00  3.4906141993496e-01 ) // 20
+(  9.9996192306417e+00  5.0000000000000e+00  8.7265354983739e-02 ) // 21
 )
 ;
 
 blocks
 (
  hex ( 0 1 2 3 0 4 5 3 ) ( 50 100 1 ) simpleGrading ( 1 1 1 ) // inner
- hex ( 6 7 8 9 10 11 12 13 ) ( 350 100 1 ) simpleGrading ( 1 1 1 ) // outer
+ hex ( 6 7 8 9 10 11 12 13 ) ( 50 100 1 ) simpleGrading ( 1 1 1 ) // coflow
+ hex ( 14 15 16 17 18 19 20 21 ) ( 300 100 1 ) simpleGrading ( 1 1 1 ) // outer
 )
 ;
 
@@ -69,7 +78,7 @@ boundary
         type patch;
         faces
         (
-         ( 6  7 11 10) // outer down
+         ( 6  7 11 10) // coflow down
         );
     }
     coUpp
@@ -77,7 +86,23 @@ boundary
         type patch;
         faces
         (
-         ( 8  9 13 12) // outer up
+         ( 8  9 13 12) // coflow up
+        );
+    }
+    waLow
+    {
+        type patch;
+        faces
+        (
+         (14 15 19 18) // outer down
+        );
+    }
+    waUpp
+    {
+        type patch;
+        faces
+        (
+         (16 17 21 20) // outer up
         );
     }
     outlet
@@ -85,7 +110,7 @@ boundary
         type patch;
         faces
         (
-         ( 7  8 12 11) // outer right
+         (15 16 20 19) // outer right
         );
     }
     front
@@ -94,7 +119,8 @@ boundary
         faces
         (
          (0 4 5 3) // inner front
-         (10 11 12 13) // outer front
+         (10 11 12 13) // coflow front
+         (18 19 20 21) // outer front
         );
     }
     back
@@ -103,7 +129,8 @@ boundary
         faces
         (
          (0 3 2 1) // inner back
-         (6 9 8 7) // outer back
+         (6 9 8 7) // coflow back
+         (14 17 16 15) // outer back
         );
     }
     axis
@@ -119,7 +146,7 @@ boundary
         type empty;
         faces
         (
-    (1 2 5 4) // inner right
+         (1 2 5 4) // inner right
         );
     }
     dummy2
@@ -127,7 +154,23 @@ boundary
         type empty;
         faces
         (
-    ( 9  6 10 13) // outer left
+         ( 9  6 10 13) // coflow left
+        );
+    }
+    dummy3
+    {
+        type empty;
+        faces
+        (
+         ( 7  8 12 11) // coflow right
+        );
+    }
+    dummy4
+    {
+        type empty;
+        faces
+        (
+         (17 14 18 21) // outer left
         );
     }
 );
@@ -135,6 +178,7 @@ boundary
 mergePatchPairs
 (
   (dummy1 dummy2)
+  (dummy3 dummy4)
 );
 
 // ************************************************************************* //