我做的是旋转机械，利用周期网格，在fluent导入gambit网格出现错误，错误如下
Building...
grid,
Note: Separating wall zone 7 into zones 7 and 1.
wall -> wall (7) and wall:001 (1)
Note: Separating wall zone 8 into zones 8 and 16.
wall2 -> wall2 (8) and wall2:016 (16)
Note: Separating wall zone 9 into zones 9 and 18.
wall1 -> wall1 (9) and wall1:018 (18)
Note: Separating pressure-inlet zone 14 into zones 14 and 19.
in -> in (14) and in:019 (19)
Note: Separating pressure-inlet zone 14 into zones 14 and 20.
in -> in (14) and in:020 (20)
Note: Separating pressure-outlet zone 15 into zones 15 and 21.
out -> out (15) and out:021 (21)
Note: Separating pressure-outlet zone 15 into zones 15 and 22.
out -> out (15) and out:022 (22)
Note: Separating interior zone 17 into zones 17 and 23.
default-interior -> default-interior (17) and default-interior:023 (23)
Note: Separating interior zone 17 into zones 17 and 24.
default-interior -> default-interior (17) and default-interior:024 (24)Error: build-grid: null c0 on periodic face shadow.
Error: Build_Grid: grid error.
Clearing partially read grid.
Error: Null Domain Pointer
Error Object: ()
Interrupting...
Done.
