wrong cell to cell normal in periodic meshes

[fipymigrate]

For a periodic mesh, the cell to cell normal is wrong.

See attached example test code ben_bug02.py, the cell to cell normal on one of the faces where there is periodicity is pointing opposite the face normal.

Patch celcelnormal.diff contains the fix: call update on cell-cell normal calculation after the connect faces code

Imported from trac ticket #301, created by benny.malengier@gmail.com on 06-30-2010 at 17:58, last modified: 06-20-2011 at 16:30

[fipymigrate]

benny.malengier@gmail.com attached ben_bug02.py on 06-30-2010 at 17:58

[fipymigrate]

benny.malengier@gmail.com attached celcelnormal.diff on 06-30-2010 at 17:58

[fipymigrate]

The reason this patch is needed is when inheriting classes of fipy, and eg using the concatenate code, terms like DiffusionTerm will not work as they use cell to cell normal when the grid is not orthogonal (creating an antidiffusion).

Trac comment by benny.malengier@gmail.com on 06-30-2010 at 18:24

[wd15]

Fixed with r4630.

Trac comment by wd15 on 06-20-2011 at 16:30