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

[ICEM] 3D blocking with a 2D surface inside

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

Like Tree2Likes
  • 2 Post By PSYMN

Reply
 
LinkBack Thread Tools Display Modes
Old   July 21, 2010, 12:15
Default 3D blocking with a 2D surface inside
  #1
Senior Member
 
AB
Join Date: Sep 2009
Location: France
Posts: 323
Rep Power: 12
BrolY will become famous soon enough
Hi,

I created a 3D blocking for my model, and there are 2D surfaces inside it.
Those surfaces are solids and are inside the fluid domain. I splitted my blocks all around those surfaces and associated the edges to the curves.
But, when I pre-mesh the model, the surfaces aren't meshed, they are assigned to the fluid part.
How can I solve this?

I thought about associated the surfaces to the faces of the blocks, but those surfaces are in contact with 2 faces, so I didn't which one I should choose.

Thanks for your help,
BrolY is offline   Reply With Quote

Old   July 22, 2010, 05:31
Default
  #2
Senior Member
 
AB
Join Date: Sep 2009
Location: France
Posts: 323
Rep Power: 12
BrolY will become famous soon enough
Associated one of the faces of the blocks around the the 2D part with the surface worked well. The 2D surface is well meshed.
The index control is very useful for this operation!
BrolY is offline   Reply With Quote

Old   July 22, 2010, 11:31
Default Face to Part...
  #3
Senior Member
 
PSYMN's Avatar
 
Simon Pereira
Join Date: Mar 2009
Location: Ann Arbor, MI
Posts: 2,662
Blog Entries: 1
Rep Power: 35
PSYMN has a spectacular aura aboutPSYMN has a spectacular aura about
Glad you figured it out... For the benefit of others let me explain...

In Hexa if you have the same block material on both sides of a face, the default is no projection and no shells. Even if you associate the perimeter edges to curves, the face default is still unassociated.

If you have a different material on the other side, the default is to associate face to the nearest surface. ICEM CFD hexa assumes you will have a surface between blocks of different materials. Some users may have blocks in different materials for other reasons (porus media or just to separate various fluid regions for display/modeling purposes), but without intent for actual walls between them. You can handle this with the Face to surface option for shared walls. it will let you pic whole blocking materials and decide the default between them.

In your particular case, you just had a zero thickness surface between blocks of the same material and needed to override the default (not projected). The fix is just to go into "Associate Face" and manually override with a new association to nearest or even a particular part. If you have two superimposed surfaces, it is probably better to pick one part so the mesh comes out consistent.
DungPham and abuono1 like this.
PSYMN 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
Problem with Gmsh nishant_hull Open Source Meshers: Gmsh, Netgen, CGNS, ... 19 Today 05:10
Error : Self intersecting surface mesh, computing intersections & Error : Impossible velan Open Source Meshers: Gmsh, Netgen, CGNS, ... 1 July 14, 2015 05:54
boundaries with gmshToFoam‏ ouafa Open Source Meshers: Gmsh, Netgen, CGNS, ... 7 May 21, 2010 12:43
meshing F1 front wing Steve FLUENT 0 April 17, 2003 12:37
CFX4.3 -build analysis form Chie Min CFX 5 July 12, 2001 23:19


All times are GMT -4. The time now is 22:13.