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

[snappyHexMesh] TopoSet does not select all faces

Register Blogs Community New Posts Updated Threads Search

Like Tree1Likes
  • 1 Post By Mondal131211

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   July 18, 2019, 03:46
Default TopoSet does not select all faces
  #1
Member
 
Mondal131211's Avatar
 
Mondal
Join Date: Sep 2018
Location: Canberra ACT
Posts: 68
Rep Power: 8
Mondal131211 is on a distinguished road
Hi everyone,

Hope you are doing well. Recently, I have stuck in a situation and can not understand how this problem can be solved. My problem is with topoSet. Lets briefly describe what I am trying. Please have a look at the attachment. I would like to create two different faceSets from an STL surface meshed using snappyhexmesh. First of all, I created a 3D meshing and then converted into 2D using extrudeMesh utility. After doing this, when I apply topoSet, it runs perfectly and produced two different faceSets. But the faceSet created by topoSet seems to miss some of the faces (see attached picture). I can not understand what's happening here. Why these cells are not selecting?. Is that the problem of Meshing (CheckMesh shows Mesh Ok)? or defining topoSet?

For better clarification, I also attached my topoSet and createPatch dictionary.

Can anyone comment on it so that I can understand what the problem is?
Any help would be appreciated. I didn't find any thread about this issue.

Regards
Razon
Attached Images
File Type: png Total Mesh.png (27.5 KB, 41 views)
File Type: png zoom view.png (14.2 KB, 32 views)
File Type: png Two separate faceset.png (8.8 KB, 27 views)
File Type: png problem cell.png (30.4 KB, 20 views)
Attached Files
File Type: gz file_toposet_createPatch.tar.gz (3.1 KB, 17 views)
Owais Shabbir likes this.
Mondal131211 is offline   Reply With Quote

Old   July 22, 2019, 20:48
Default
  #2
Member
 
Mondal131211's Avatar
 
Mondal
Join Date: Sep 2018
Location: Canberra ACT
Posts: 68
Rep Power: 8
Mondal131211 is on a distinguished road
Quote:
Originally Posted by Mondal131211 View Post
Hi everyone,

Hope you are doing well. Recently, I have stuck in a situation and can not understand how this problem can be solved. My problem is with topoSet. Lets briefly describe what I am trying. Please have a look at the attachment. I would like to create two different faceSets from an STL surface meshed using snappyhexmesh. First of all, I created a 3D meshing and then converted into 2D using extrudeMesh utility. After doing this, when I apply topoSet, it runs perfectly and produced two different faceSets. But the faceSet created by topoSet seems to miss some of the faces (see attached picture). I can not understand what's happening here. Why these cells are not selecting?. Is that the problem of Meshing (CheckMesh shows Mesh Ok)? or defining topoSet?

For better clarification, I also attached my topoSet and createPatch dictionary.

Can anyone comment on it so that I can understand what the problem is?
Any help would be appreciated. I didn't find any thread about this issue.

Regards
Razon
Hi all,

Problem Resolved......
Mondal131211 is offline   Reply With Quote

Old   July 24, 2019, 10:19
Default
  #3
Member
 
Owais Shabbir
Join Date: May 2019
Posts: 48
Rep Power: 7
Owais Shabbir is on a distinguished road
Hi,



Would you like to share the solution?

Thanks.
Owais
Owais Shabbir is offline   Reply With Quote

Old   July 24, 2019, 10:39
Default
  #4
Member
 
Mondal131211's Avatar
 
Mondal
Join Date: Sep 2018
Location: Canberra ACT
Posts: 68
Rep Power: 8
Mondal131211 is on a distinguished road
Quote:
Originally Posted by Owais Shabbir View Post
Hi,



Would you like to share the solution?

Thanks.
Owais
Hi Owais,
Sure.It was just a problem of defining the coordinates of the two extreme points. I made a mistake to select wrong coordinate of Z direction. If you face this kind of problem, I would suggest please check the bounding box carefully before putting it in the topoSet. I think slicing by paraview is the best way to identify the coordinates of the bounding box.

Have fun!

Cheers
Razon
Mondal131211 is offline   Reply With Quote

Reply


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
[snappyHexMesh] Add Mesh Layers doesnt work on the whole surface Kryo OpenFOAM Meshing & Mesh Conversion 13 February 17, 2022 08:34
[Gmsh] Vertex numbering is dense KateEisenhower OpenFOAM Meshing & Mesh Conversion 7 August 3, 2015 11:49
SigFpe when running ANY application in parallel Pj. OpenFOAM Running, Solving & CFD 3 April 23, 2015 15:53
Compressor Simulation using rhoPimpleDyMFoam Jetfire OpenFOAM Running, Solving & CFD 107 December 9, 2014 14:38
[snappyHexMesh] external flow with snappyHexMesh chelvistero OpenFOAM Meshing & Mesh Conversion 11 January 15, 2010 20:43


All times are GMT -4. The time now is 09:45.