[求助]网格的划分问题

cooldoggie

现在需要计算一个微细长管，内径1mm，长10cm的管内流动问题，不知道该怎样划分网格才好。请大家帮忙出出主意啦，谢谢啦！

cooldoggie

我自己画过了，先画面再生成体的。但是在fluent里面check的时候出现警告了。
Grid Check
Domain Extents:
   x-coordinate: min (m) = -5.000000e-004, max (m) = 5.000000e-004
   y-coordinate: min (m) = -5.000000e-004, max (m) = 5.000000e-004
   z-coordinate: min (m) = 0.000000e+000, max (m) = 1.000000e-001
Volume statistics:
   minimum volume (m3): 1.182482e-013
   maximum volume (m3): 2.692448e-012
     total volume (m3): 7.801033e-008
Face area statistics:
   minimum face area (m2): 3.610300e-011
   maximum face area (m2): 2.882356e-008
Checking number of nodes per cell.
Checking number of faces per cell.
Checking thread pointers.
Checking number of cells per face.
Checking face cells.
Checking bridge faces.
Checking right-handed cells.
Checking face handedness.
   Zone   5: 257436 right-handed,     1 left-handed
Checking element type consistency.
Checking boundary types:
Checking face pairs.
Checking periodic boundaries.
Checking node count.
Checking nosolve cell count.
Checking nosolve face count.
Checking face children.
Checking cell children.
Checking storage.
Done.
WARNING: Grid check failed.
想请教一下这个是什么原因呢，是不是因为尺度太小的缘故。