[ivanyao]

hi,
I am simmulate 3*3 cube array.
when i run the checkMesh .it show:
Create polyMesh for time = constant

Time = constant

Mesh stats
points: 7245
edges: 20156
faces: 18608
internal faces: 15568
cells: 5696
boundary patches: 51
point zones: 0
face zones: 0
cell zones: 0

Number of cells of each type:
hexahedra: 5696
prisms: 0
wedges: 0
pyramids: 0
tet wedges: 0
tetrahedra: 0
polyhedra: 0

Checking topology...
Boundary definition OK.
Point usage OK.
Upper triangular ordering OK.
Topological cell zip-up check OK.
Face vertices OK.
Face-face connectivity OK.
Number of regions: 1 (OK).

Checking patch topology for multiply connected surfaces ...
Patch Faces Points Surface
<inlet> 224 261 ok (not multiply connected)
<outlet> 224 261 ok (not multiply connected)
<left> 224 261 ok (not multiply connected)
<right> 224 261 ok (not multiply connected)
<top> 784 841 ok (not multiply connected)
<bottom> 640 760 ok (not multiply connected)
<front1> 16 25 ok (not multiply connected)
<back1> 16 25 ok (not multiply connected)
<left1> 16 25 ok (not multiply connected)
<right1> 16 25 ok (not multiply connected)
<top1> 16 25 ok (not multiply connected)
<front2> 16 25 ok (not multiply connected)
<back2> 16 25 ok (not multiply connected)
<left2> 16 25 ok (not multiply connected)
<right2> 16 25 ok (not multiply connected)
<top2> 16 25 ok (not multiply connected)
<front3> 16 25 ok (not multiply connected)
<back3> 16 25 ok (not multiply connected)
<left3> 16 25 ok (not multiply connected)
<right3> 16 25 ok (not multiply connected)
<top3> 16 25 ok (not multiply connected)
<front4> 16 25 ok (not multiply connected)
<back4> 16 25 ok (not multiply connected)
<left4> 16 25 ok (not multiply connected)
<right4> 16 25 ok (not multiply connected)
<top4> 16 25 ok (not multiply connected)
<front5> 16 25 ok (not multiply connected)
<back5> 16 25 ok (not multiply connected)
<left5> 16 25 ok (not multiply connected)
<right5> 16 25 ok (not multiply connected)
<top5> 16 25 ok (not multiply connected)
<front6> 16 25 ok (not multiply connected)
<back6> 16 25 ok (not multiply connected)
<left6> 16 25 ok (not multiply connected)
<right6> 16 25 ok (not multiply connected)
<top6> 16 25 ok (not multiply connected)
<front7> 16 25 ok (not multiply connected)
<back7> 16 25 ok (not multiply connected)
<left7> 16 25 ok (not multiply connected)
<right7> 16 25 ok (not multiply connected)
<top7> 16 25 ok (not multiply connected)
<front8> 16 25 ok (not multiply connected)
<back8> 16 25 ok (not multiply connected)
<left8> 16 25 ok (not multiply connected)
<right8> 16 25 ok (not multiply connected)
<top8> 16 25 ok (not multiply connected)
<front9> 16 25 ok (not multiply connected)
<back9> 16 25 ok (not multiply connected)
<left9> 16 25 ok (not multiply connected)
<right9> 16 25 ok (not multiply connected)
<top9> 16 25 ok (not multiply connected)

Checking geometry...
Domain bounding box: (-51 -69 0) (135 69 60)
***Boundary openness (-0.0708104 -0.054288 -0.00393391) possible hole in boundary description.
***Open cells found, max cell openness: 1, number of open cells 676
<<Writing 676 non closed cells to set nonClosedCells
<<Writing 2992 cells with high aspect ratio to set highAspectRatioCells
Minumum face area = 2.25. Maximum face area = 405. Face area magnitudes OK.
Min volume = 2e-300. Max volume = 1640.25. Total volume = 178272. Cell volumes OK.
Mesh non-orthogonality Max: 180 average: 97.0248
***Number of non-orthogonality errors: 8736.
<<Writing 8736 non-orthogonal faces to set nonOrthoFaces
***Error in face pyramids: 19232 faces are incorrectly oriented.
<<Writing 10496 faces with incorrect orientation to set wrongOrientedFaces
Max skewness = 0.75 OK.
Min/max edge length = 1.5 30 OK.
All angles in faces OK.
Face flatness (1 = flat, 0 = butterfly) : average = 1 min = 1
All face flatness OK.

Failed 4 mesh checks.

End
and this is my blockDict
This is a picture of me: