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

[GAMBIT] Prob with Meshing a volume

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   April 29, 2009, 17:29
Smile Prob with Meshing a volume
  #1
Member
 
ANIL
Join Date: Apr 2009
Posts: 35
Rep Power: 17
makaero is on a distinguished road
Hi
I am working on wing geometry with sinusoidal leading edge, the wing is in a cuboid, which has to be meshed.
I hav applied the Boundary layer for wing faces and clicked on view BL option......it shows up that "mesh of volume contains 234 higly skewed and 185 inverted elements"

I jst ignored it and proceed to mesh volume with tetrahedral, T-grid option, it shows up that "ERROR: TG mesh domain failed with error code1
ERROR: Tetrahedral meshing has failed for volume.
This usually caused by problems in the face meshes.
check the skewness of your face meshes and make sure the
face mesh sizes are not too large in areas of small gaps."


to reduce skewness i have reduced the sharpness of trailing edge, but it doesnt worked. please help me to mesh the geometry.

Thanks a lot and sorry for the large text.
makaero is offline   Reply With Quote

Old   April 30, 2009, 02:14
Default
  #2
Super Moderator
 
-mAx-'s Avatar
 
Maxime Perelli
Join Date: Mar 2009
Location: Switzerland
Posts: 3,297
Rep Power: 41
-mAx- will become famous soon enough
check your geometry, you may have small edges or small faces, without appropriate mesh on it.
When you mesh the volume, it is possible that gambit warns you about face mesh that failed (with face id).
Just check the topology on those face id, and correct it (if you can)
__________________
In memory of my friend Hervé: CFD engineer & freerider
-mAx- is offline   Reply With Quote

Old   April 30, 2009, 02:39
Default
  #3
Member
 
ANIL
Join Date: Apr 2009
Posts: 35
Rep Power: 17
makaero is on a distinguished road
Thank you for your time.
yes it does hav a small face with 0.003in*5, its a trailing edge face.

but if i adjust the size function to obtain good face mesh, it results in coarse mesh in volume by which i might be unable to capture flow properties in BL.

and ofcourse i do hav a prob with huge number of cell volumes, because Fluent coudnt handle too many due to memory(m_alloc error), so im trying to get an apt volume mesh.
makaero is offline   Reply With Quote

Old   April 30, 2009, 03:29
Default
  #4
Super Moderator
 
-mAx-'s Avatar
 
Maxime Perelli
Join Date: Mar 2009
Location: Switzerland
Posts: 3,297
Rep Power: 41
-mAx- will become famous soon enough
Don't you have the possbility to merge those small faces?
Else you can split your volume, the aim should be to isolate this area, and mesh it with appropriate cell's size
__________________
In memory of my friend Hervé: CFD engineer & freerider
-mAx- is offline   Reply With Quote

Reply

Tags
3dwing, meshing wing, volume mesh

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
[blockMesh] BlockMesh FOAM warning gaottino OpenFOAM Meshing & Mesh Conversion 7 July 19, 2010 15:11
On the damBreak4phaseFine cases paean OpenFOAM Running, Solving & CFD 0 November 14, 2008 22:14
fluent add additional zones for the mesh file SSL FLUENT 2 January 26, 2008 12:55
[blockMesh] Axisymmetrical mesh Rasmus Gjesing (Gjesing) OpenFOAM Meshing & Mesh Conversion 10 April 2, 2007 15:00
Volume Meshing & Face Meshing? singularity of grid ken FLUENT 0 September 4, 2003 12:08


All times are GMT -4. The time now is 02:08.