[ICEM] Mirror mesh - Cell is missing face

cfdEng_ · February 16, 2021, 14:50

Hi everybody,

I mirrored my structured 3D mesh, but I get an error message for a few cells at the interface between the old and the new mesh volumes: "Cell is missing face ...".

Do you guys know how I can fix it?

Thank you very much in advance,

aero_head · February 16, 2021, 23:00

Hello,

Try to associate each face to the corresponding geometry surfaces and see if that fixes the issue.

Additionally, you can run a mesh check and put the uncovered cells in a sub group to isolate the problem. You might missing some line elements somewhere along the perimeter or something doesn't have a bc tag. Posting a photo of your geometry after doing this check might help too, so see where the issue occurs.

cfdEng_ · February 17, 2021, 20:21

Thank you for your suggestion.

In my mesh, all cells with missing faces are located where the hanging nodes due to mesh refinement are adjacent to the mesh mirrored duplicate. I am not sure why this is the case.

aero_head · February 18, 2021, 11:53

Ah, have you run the 'resolve refinements' function?

February 16, 2021, 14:50	Mirror mesh - Cell is missing face	#1
cfdEng_ New Member Join Date: Apr 2020 Posts: 26 Rep Power: 6	Hi everybody, I mirrored my structured 3D mesh, but I get an error message for a few cells at the interface between the old and the new mesh volumes: "Cell is missing face ...". Do you guys know how I can fix it? Thank you very much in advance,

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February 16, 2021, 23:00		#2
aero_head Senior Member Kira Join Date: Nov 2020 Location: Canada Posts: 435 Rep Power: 8	Hello, Try to associate each face to the corresponding geometry surfaces and see if that fixes the issue. Additionally, you can run a mesh check and put the uncovered cells in a sub group to isolate the problem. You might missing some line elements somewhere along the perimeter or something doesn't have a bc tag. Posting a photo of your geometry after doing this check might help too, so see where the issue occurs.

February 17, 2021, 20:21		#3
cfdEng_ New Member Join Date: Apr 2020 Posts: 26 Rep Power: 6	Thank you for your suggestion. In my mesh, all cells with missing faces are located where the hanging nodes due to mesh refinement are adjacent to the mesh mirrored duplicate. I am not sure why this is the case.

February 18, 2021, 11:53		#4
aero_head Senior Member Kira Join Date: Nov 2020 Location: Canada Posts: 435 Rep Power: 8	Ah, have you run the 'resolve refinements' function?