Bad connectivity
Hi all,
I try to mesh a downward facing step but I obtain bad connectivity errors in the preprocessor log. I do not succeed in removing those bad connections, may you help me? I provides all the files that can help below and I removed all the lines that can be removed to simplify the debugging.
My mesh that consists into 2 zones:
- the first one is made of structured hexa cells (meshed with the file DWFS.geo).
- the second one is the refinement zone and is made of tetra cells (meshed with a background field with the python API - maillage_auto_forum.py).
The four following files have to be placed in the same directory to make it works: DWFS.geo maillage_auto_forum.py in.csv out.csv
The obtained error is detailed in the preprocessor.log: preprocessor.log
The setup file is given here: setup.xml
A view of the obtained mesh is given below.
A visualization of the bad connectivity cells with Paraview is below. Note that several bad connections occur at the location (0,0,0).
I already tried to change the 3D algorithms but as I have both tetra and hexa cells some of them do not work. The MMG3D permits avoiding the bad connectivity issues but it does not take into account my background field in the range 0<z<1
. Furthermore, it works with tetras and I prefer to have pyramids at the interface between the structured and the non structured regions to ensure the mesh conformity.
I also tried to modify the number of cells in the spanwise direction as well as the desired cell sizes in 2 regions but the bad connections remain.
Thanks a lot for your help,
Sincerely