PolyDualMesh not working properly
 

Hey everybody,

I try to convert a tetraeder mesh (Salome - Netgen 3D/2D) into a polygon mesh using the utility polyDualMesh. The application runs nice but checkMesh gives errors. Does anybody know if it is working with all tetreader meshes? I also found this thread: https://www.cfd-online.com/Forums/op...h-utility.html and the corresponding foam wiki page but both were not helpful.


Some feedback would be nice.

Hi Tobi,

The converter will work only if your tet mesh is Delauney. Do you have a way to check that? (I know, I wrote the utility),

Hrv

Hi Hrv,

what a pleasure to get feedback from you. Thank you for your reply. The mesh was generated using Salome Meca (NETGEN 3D/2D). I will check if there is a possibility to check if the tetmesh is Delauney or even check out other algorithms that come with Salome.

Thank you in advance.

Hi Hrv,

you were right. I changed the parameters in Salome and got the result that I wanted to have now :) - for those who are interested, you have to use NETGEN 3D-2D-1D in the 3D setup mask.

Now everything is fine. Thanks again.

Hello Tobi, Hrv,
A good evening to both of you :-)

Just for some additional info, yes, meshes generated by Netgen are Delaunay meshes with pure tet elements.

Since the mesh was created from within Salome, there might have been a setting which somehow violated this, but if you were to create the mesh using the original Netgen code/api/gui, you would get a Delaunay mesh.

Wish you a good evening ahead.

Regards,
Philippose

Hi Tobi,

I am working on the polygon mesh by polyDualMesh recently, I want to convert the tetrahedral mesh in the hybrid mesh into polyhedral one, but after converting the mesh I run the checkMesh, and find the number of cells becomes more than 4 times . I just wander is there something wrong with the converting? Since the polygon mesh should be less than tetrahedral mesh.
Thank you!