diff --git a/fluid-openfoam/system/blockMeshDict b/fluid-openfoam/system/blockMeshDict
index 79cacd2..e496214 100644
--- a/fluid-openfoam/system/blockMeshDict
+++ b/fluid-openfoam/system/blockMeshDict
@@ -44,9 +44,9 @@ vertices
 
 blocks
 (
-    hex (12 0 3 13 15 4 7 14) (30 30 1) simpleGrading (1 1 1)
+    hex (12 0 3 13 15 4 7 14) (20 60 1) simpleGrading (1 1 1)
     hex (0 1 2 3 4 5 6 7) (60 60 1) simpleGrading (1 1 1)
-    hex (1 8 9 2 5 10 11 6) (20 20 1) simpleGrading (1 1 1)
+    hex (1 8 9 2 5 10 11 6) (20 60 1) simpleGrading (1 1 1)
 );
 
 boundary