CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > OpenFOAM Native Meshers: blockMesh

Internal walls of zero thickness

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

Reply
 
LinkBack Thread Tools Display Modes
Old   April 6, 2009, 01:50
Default
  #21
Senior Member
 
lakeat's Avatar
 
Daniel WEI (老魏)
Join Date: Mar 2009
Location: Beijing, China
Posts: 689
Blog Entries: 9
Rep Power: 13
lakeat is on a distinguished road
Send a message via Skype™ to lakeat
Hi again, I found the solution, use the normalToFace option in faceSetDic

Code:
    // Faces with normal to within certain angle aligned with vector.
    normalToFace
    {
        normal (0.309016994 0.951056516 0);     // Vector
        cos     0.000000001;       // Tolerance (max cos of angle)
    }
Note: as for zero thickness plate, set cos option a small one, (use foamToVTK -faceSet plateTmp to Check it).

What a nice day!

Daniel
__________________
~
Daniel WEI
-------------
Boeing Research & Technology - China
Beijing, China
Email
lakeat is offline   Reply With Quote

Old   March 19, 2015, 10:21
Default
  #22
New Member
 
Timothée
Join Date: Mar 2015
Posts: 1
Rep Power: 0
sati is on a distinguished road
It may seem weird to answer to a post so long after it was written, but as i fell on it today, i'm thinking that maybe i could help other people having this problem.

A very simple trick to create a thin wall in an internal face is to create a point with the same coordinates than on of those which are on the internal face. Then, define the faces and the blocks as if one of the points was on one side of the face, and the other point was on the other face. This way, the mesh is identical to the one created before, exept that there is no more an intern face, and defining a wall patch there becomes trivial.
sati is offline   Reply With Quote

Old   December 15, 2015, 03:06
Default
  #23
Senior Member
 
Mojtaba.a's Avatar
 
Mojtaba Amiraslanpour
Join Date: Jun 2011
Location: Zanjan, Iran
Posts: 287
Rep Power: 8
Mojtaba.a is on a distinguished road
Send a message via Skype™ to Mojtaba.a
Quote:
Originally Posted by sati View Post
It may seem weird to answer to a post so long after it was written, but as i fell on it today, i'm thinking that maybe i could help other people having this problem.

A very simple trick to create a thin wall in an internal face is to create a point with the same coordinates than on of those which are on the internal face. Then, define the faces and the blocks as if one of the points was on one side of the face, and the other point was on the other face. This way, the mesh is identical to the one created before, exept that there is no more an intern face, and defining a wall patch there becomes trivial.
Wouldn't this lead into a new block, which has absolute poor cells within it?
__________________
Learn OpenFOAM in Persian for free, And ask your questions here.
Complex Heat & Flow Simulation Research Group
If you can't explain it simply, you don't understand it well enough. "Richard Feynman"
Mojtaba.a 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
SnappyHexMesh internal walls podallaire OpenFOAM Mesh Utilities 2 July 24, 2008 09:12
Fluent3dMeshToFoam error with Fluent mesh with internal walls jdk OpenFOAM Other Meshers: ICEM, Star, Ansys, Pointwise, GridPro, Ansa, ... 3 February 19, 2008 10:01
starccm+2 handling of internal walls/faces nico CD-adapco 2 June 8, 2007 05:58
Internal Walls in Hex hagupta CFX 4 June 7, 2006 09:09
Internal/Interior walls in Gambit/Tgrid Riaan FLUENT 0 March 31, 2006 22:16


All times are GMT -4. The time now is 09:31.