CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > OpenFOAM > OpenFOAM Meshing & Mesh Conversion

[Other] Holes in Mesh after conversion

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   December 7, 2023, 14:42
Default Holes in Mesh after conversion
  #1
Member
 
Anurag
Join Date: Feb 2023
Posts: 69
Rep Power: 3
anubasu is on a distinguished road
Hi all, I have converted a 3D Mesh from Fluent to OpenFOAM that has got tetrahedral cells. But after conversion I can see some holes in the 3D as well as 2D mesh inside paraview. But this problem is not with hexa cels. Can anyone please suggest what is the problem? Is OpenFOAM not suitable for tetra cells? I attached the picture.

Many Thanks.
Attached Images
File Type: jpg Screenshot (140).jpg (99.7 KB, 14 views)
anubasu is offline   Reply With Quote

Old   December 8, 2023, 05:26
Default
  #2
Senior Member
 
Join Date: Dec 2021
Posts: 236
Rep Power: 5
Alczem is on a distinguished road
Hey!


I suspect it is only an issue with the visualization in Paraview. I have encountered this issue sometimes when using fluent meshes, but I could always run the cases.


What does checkMesh say? I think you should be fine if the import was successful.
Alczem is offline   Reply With Quote

Old   December 8, 2023, 15:07
Default
  #3
Member
 
Anurag
Join Date: Feb 2023
Posts: 69
Rep Power: 3
anubasu is on a distinguished road
Hi, Okay, checkMesh is fine. But then how can I submit these results with these holes? Is there a way to correct it? with hexahedral cells this issue is not coming.

thanks.
anubasu is offline   Reply With Quote

Old   December 8, 2023, 15:52
Default
  #4
Member
 
Anurag
Join Date: Feb 2023
Posts: 69
Rep Power: 3
anubasu is on a distinguished road
Hi, Okay, checkMesh is fine. But then how can I submit these results with these holes? Is there a way to correct it? with hexahedral cells this issue is not coming.

thanks.
anubasu is offline   Reply With Quote

Old   December 11, 2023, 04:45
Default
  #5
Senior Member
 
Join Date: Dec 2021
Posts: 236
Rep Power: 5
Alczem is on a distinguished road
Have you tried turning on the "Crinkle slice" option, to avoir splitting cells? It might be better looking. Did you open a reconstructed or decomposed step? Decomposed steps can sometimes lead to visualization issues in my experience.
Alczem is offline   Reply With Quote

Old   December 11, 2023, 14:52
Default
  #6
Member
 
Anurag
Join Date: Feb 2023
Posts: 69
Rep Power: 3
anubasu is on a distinguished road
Quote:
Originally Posted by Alczem View Post
Have you tried turning on the "Crinkle slice" option, to avoir splitting cells? It might be better looking. Did you open a reconstructed or decomposed step? Decomposed steps can sometimes lead to visualization issues in my experience.
Hi Brother, I opened a reconstructed case. No I havent tried the crinkle slice option. But what I am seeing is when I am giving tetra cells this issue is coming, but when I am giving hexa cells this issue is not there. Thanks. Do you have any suggestions?
anubasu is offline   Reply With Quote

Old   December 11, 2023, 17:51
Default
  #7
Member
 
Anurag
Join Date: Feb 2023
Posts: 69
Rep Power: 3
anubasu is on a distinguished road
Now I have tried the crinkled slice option but I want to look at a flat slice to submit these results in my project.
anubasu is offline   Reply With Quote

Old   December 12, 2023, 05:47
Default
  #8
Senior Member
 
Join Date: Dec 2021
Posts: 236
Rep Power: 5
Alczem is on a distinguished road
Hey!


I noticed you are using Paraview 5.3. Maybe you could try to upgrade to the latest version (5.11 I believe). It could help with the issue.


No other idea right now sorry!
Alczem is offline   Reply With Quote

Old   December 12, 2023, 09:42
Default
  #9
Member
 
Anurag
Join Date: Feb 2023
Posts: 69
Rep Power: 3
anubasu is on a distinguished road
Thanks, no problem
anubasu is offline   Reply With Quote

Old   December 12, 2023, 17:30
Default
  #10
Member
 
Anurag
Join Date: Feb 2023
Posts: 69
Rep Power: 3
anubasu is on a distinguished road
Hi , I am using the terminal of my HPC and there I could only open paraview/5.3. I tried opening latest version of paraview but it is showing a graphics error
qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

Available platform plugins are: xcb.

I am doing this to visualise the results directly on the HPC. Any suggestions what to do? Thanks
anubasu is offline   Reply With Quote

Reply


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
flow over cylinder in openFoam saeed jamshidi OpenFOAM Pre-Processing 3 August 11, 2023 16:16
GeometricField -> mesh() Function Tobi OpenFOAM Programming & Development 10 November 19, 2020 12:33
[snappyHexMesh] Mesh contains holes on interface of multiregion case DriesAllaerts OpenFOAM Meshing & Mesh Conversion 6 December 17, 2019 05:43
CFD by anderson, chp 10.... supersonic flow over flat plate varunjain89 Main CFD Forum 18 May 11, 2018 08:31
fluent add additional zones for the mesh file SSL FLUENT 2 January 26, 2008 12:55


All times are GMT -4. The time now is 18:51.