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

[ANSYS Meshing] Inlfation not working when using 'Patch Conforming' method

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

Like Tree1Likes
  • 1 Post By jrunsten

Reply
 
LinkBack Thread Tools Display Modes
Old   September 13, 2013, 18:33
Question Inlfation not working when using 'Patch Conforming' method
  #1
New Member
 
Alireza Habibzadeh
Join Date: Apr 2009
Location: Edmonton, Canada
Posts: 4
Rep Power: 9
arhabib is on a distinguished road
Hi;

I am creating a CFD mesh and the inflation option does not work at all when using 'Patch Conforming'.
I have tried any combination of settings but still activating or de-activating
inflation has absolutely no effect on the resulting mesh. No error messages are displayed at all!
When switched to 'Patch Independent', inflation appears but an error message shows up: 'The mesh on the following entities might be valid but too coarse.' And no entity is listed!
The geometry is a thin 3D domain.
Has anyone else had a similar problem?

Thanks
arhabib is offline   Reply With Quote

Old   September 16, 2013, 03:50
Default
  #2
Senior Member
 
Josef Runsten
Join Date: Jul 2010
Location: Gothenburg, Sweden
Posts: 188
Rep Power: 16
jrunsten will become famous soon enough
Send a message via MSN to jrunsten
Should work, if you set it up correctly. Meshing isn't always easy and automatic, regardless of software...

Can you share the geometry? If it's a thin geometry then maybe your settings for inflation are invalid - ie your inflation layers doesn't fit within the thin structure
sircorp likes this.
jrunsten is offline   Reply With Quote

Old   September 16, 2013, 11:39
Default
  #3
New Member
 
Alireza Habibzadeh
Join Date: Apr 2009
Location: Edmonton, Canada
Posts: 4
Rep Power: 9
arhabib is on a distinguished road
Thanks for your response Josef;

I am modeling an open channel flow. I'd like to simulate part of the flume in the presence of an obstacle (block) which is located at x=0.19 m.
The dimensions of the domain in different directions are:
x: 3 m, y: 0.5 m, z: 0.045 m
The obstacle is 0.038 tall (in the y direction) and 0.0225 m wide (in the z direction).
Inflation is applied to the bed (3 m x 0.045 m) and all surfaces of the obstacle.
The two sides of the domain (x-y planes) are symmetry planes.
Here is a close-up image of the domain:

Last edited by arhabib; September 16, 2013 at 13:24.
arhabib is offline   Reply With Quote

Old   September 16, 2013, 17:27
Default
  #4
New Member
 
Alireza Habibzadeh
Join Date: Apr 2009
Location: Edmonton, Canada
Posts: 4
Rep Power: 9
arhabib is on a distinguished road
I should also mention that the inflation is shown in 'Preview Inflation'.
But in 'Preview Surface Mesh' or when mesh is generated, no inflation exists!
arhabib is offline   Reply With Quote

Old   September 19, 2013, 08:30
Default
  #5
siw
Senior Member
 
Stuart
Join Date: Jul 2009
Location: Portsmouth, England
Posts: 484
Rep Power: 15
siw will become famous soon enough
ANSYS Meshing does not make the prisms until after it has made the surface mesh when using the Patch Conformal method, so that is why you only see a surface mesh when you select "Preview Surface Mesh".

Have you changed any of the inflation layer options from their defaults, are you using pre or post inflation? Are you getting any warning or error messages? Have you made the inflation layers so small you just cannot see them? Try making the entire volume mesh and view a mesh metric to see want element types it reports.
siw is offline   Reply With Quote

Old   September 20, 2013, 08:02
Thumbs up
  #6
Member
 
vidyanand
Join Date: Nov 2011
Location: bangalore,india
Posts: 66
Rep Power: 9
Vidyanand Kesti is on a distinguished road
It should work if you see in the volume mesh,please check the inflation values,if its quite easy you can go with edge bias also
Vidyanand Kesti is offline   Reply With Quote

Reply

Tags
cfx, inflation, mesh, patch conforming, patch independent

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
AMI speed performance danny123 OpenFOAM 19 October 24, 2012 07:44
Problem in defining patch deformation paul b OpenFOAM Programming & Development 3 April 27, 2010 00:31
mapFields : internal edges Gearb0x OpenFOAM Running, Solving & CFD 3 April 19, 2010 09:02
Using createPatch in place of couplePatches sripplinger OpenFOAM Mesh Utilities 8 November 13, 2009 08:14
Working 3D Panel Method Daniel_Cro Main CFD Forum 8 May 21, 2007 23:07


All times are GMT -4. The time now is 20:11.