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[mesh manipulation] PolyDualMesh not working properly |
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June 2, 2017, 17:58 |
PolyDualMesh not working properly
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#1 |
Super Moderator
Tobias Holzmann
Join Date: Oct 2010
Location: Tussenhausen
Posts: 2,708
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Rep Power: 51 |
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.
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Keep foaming, Tobias Holzmann Last edited by Tobi; June 3, 2017 at 09:45. |
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June 3, 2017, 05:17 |
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#2 |
Senior Member
Hrvoje Jasak
Join Date: Mar 2009
Location: London, England
Posts: 1,905
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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
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Hrvoje Jasak Providing commercial FOAM/OpenFOAM and CFD Consulting: http://wikki.co.uk |
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June 3, 2017, 06:41 |
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#3 |
Super Moderator
Tobias Holzmann
Join Date: Oct 2010
Location: Tussenhausen
Posts: 2,708
Blog Entries: 6
Rep Power: 51 |
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.
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Keep foaming, Tobias Holzmann |
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June 3, 2017, 09:44 |
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#4 |
Super Moderator
Tobias Holzmann
Join Date: Oct 2010
Location: Tussenhausen
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Blog Entries: 6
Rep Power: 51 |
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.
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Keep foaming, Tobias Holzmann |
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June 3, 2017, 16:59 |
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#5 |
Senior Member
Philippose Rajan
Join Date: Mar 2009
Location: Germany
Posts: 552
Rep Power: 25 |
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 |
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April 26, 2019, 17:11 |
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#6 | |
New Member
Not applicable
Join Date: Sep 2018
Posts: 15
Rep Power: 7 |
Quote:
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! Last edited by kagen816; April 27, 2019 at 04:30. |
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