CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > FLUENT

'Tetrahedral meshing has failed for volume...'

Register Blogs Members List Search Today's Posts Mark Forums Read

Reply
 
LinkBack Thread Tools Display Modes
Old   February 6, 2009, 17:14
Default 'Tetrahedral meshing has failed for volume...'
  #1
Murat
Guest
 
Posts: n/a
Hi,

My question is related with Gambit. I am doing some modifications on 3D truck model. One of this modification is adding side mirrors to truck. I created the side mirrors on truck geometry and meshed the all surfaces of side mirrors one by one. Then i wanted to create volume mesh on the geometry but it did not mesh the volume and it gave an error on the text screen of Gambit like this; "Tetrahedral meshing has failed for volume v_volume.57. This is usually caused by problems in the face meshes check the skewness of your face meshes and make sure the face mesh size are not too large in areas of small gaps."

Before adding the side mirrors to truck geometry, there were no error on meshing the volume. So, i guessed that the error was related with side mirror geometry. But, although i check both faces and face meshes of side mirror geometry, there is no error message related with them. Furthermore, what can be the reason for not meshing the volume? What can i do to mesh the volume?

Thanks,

Murat
  Reply With Quote

Old   February 9, 2009, 21:07
Default Re: 'Tetrahedral meshing has failed for volume...'
  #2
zongtwi
Guest
 
Posts: n/a
Try using size functions around the side mirror geometry. See if that would help.
  Reply With Quote

Old   February 10, 2009, 01:45
Default Re: 'Tetrahedral meshing has failed for volume...'
  #3
Murat
Guest
 
Posts: n/a
I tried size functions but this time Gambit gives error message like that: " TG_Mesh Domain failed with error code 1. A size function is already associated with the following entities, thus the required uniform mesh size is ignored during meshing"

I did not understand what this message mean. Before i did not try size funtion on geometry but the error message mentions like that.
  Reply With Quote

Old   February 10, 2009, 04:49
Default Re: 'Tetrahedral meshing has failed for volume...'
  #4
zongtwi
Guest
 
Posts: n/a
Well, it is hard to troubleshoot your case without seeing the problem first hand.

I would recommend re-meshing your case from scratch. Do a 'Reset Mesh' in the command line, and mesh your edges, surfaces and volumes again. Ensure that your sizing are all similar to the previous case if you want to compare the two results together.

Hope that helps.
  Reply With Quote

Old   February 10, 2009, 07:36
Default Re: 'Tetrahedral meshing has failed for volume...'
  #5
mAx
Guest
 
Posts: n/a
you should have an small egde somewhere
  Reply With Quote

Old   February 19, 2011, 05:22
Default
  #6
New Member
 
bing
Join Date: Feb 2011
Posts: 5
Rep Power: 6
onionmon is on a distinguished road
I had the same error. I discovered a vertex from one surface that was very close to another surface so that a 3D tet element was not able to be created during 3D meshing. The vertex closeness to a surface is shown in a rough diagram below.

Code:
|-----|    |-----|
|       |_._|       |
|---------------|
See if you can find a lone white vertex (multi-edged vertices are purple) sitting by itself anywhere in your model. Zooming out may help. I then created a geometry and boolean-subtracted it from my base geometry so that the vertex was removed. Then I was able to mesh.
onionmon is offline   Reply With Quote

Reply

Thread Tools
Display Modes

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 On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Failed in volume meshing MANOJKUMAR FLUENT 0 October 19, 2005 06:19
tetrahedral meshing in square channel Aashutosh Magdum FLUENT 4 May 28, 2005 20:27
Initialization failed for volume meshing?? Ng FLUENT 1 March 15, 2005 09:00
Tetrahedral vs. Hexahedral Meshing for CFD Andy Bartels Main CFD Forum 14 August 22, 2000 07:35
tetrahedral meshing Codes Heinz Wilkening Main CFD Forum 1 August 26, 1998 14:03


All times are GMT -4. The time now is 16:38.