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

[Gmsh] Problem meshing an imported geometry

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

Like Tree1Likes
  • 1 Post By Alicia

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   March 30, 2010, 05:53
Default Problem meshing an imported geometry
  #1
New Member
 
Join Date: Mar 2010
Posts: 1
Rep Power: 0
Alicia is on a distinguished road
Hi all,

I don't really know if my post is in the right place here since I'm not using OpenFoam, but this one of the very few forums I found about GMSH.

I'm using GMSH to mesh geometry imported from Salome. I want to use the mesh function Transfinite Line with the option "Using Bump", which works perfectly with a geometry created in gmsh. When I try to use it with an imported geometry (my .geo file starts with Merge "geom.step"; (I also tried with .brep and .iges), the resulting mesh does not correspond at all with what I asked : I used the command
Transfinite Line(1)=14 Using Bump 4;
to refine the mesh at the middle of the line. What I get is only two points on the line 1, one at each end of it...
At first I had quite a complex geometry (a cubic volume with a hole in a 'radar' shape), so I tried with the simplest geometry : a quadrangle face. It doesn't work either, and here I get the right number of points on the line, but they are organised more like a geometric progression (each segment is x times the length of the previous one) than refine at some point.
For my complex geometry, I tried saving my file .step (or .iges or .brep) into .geo and then define the transfinite line with "using bump", but as it is a complew geometry when saving into .geo file several faces are skipped while exporting, and I can't mesh all my domain...
For the simple geometry, saving my .step file into .geo file and then defining transfinite line works.
I'd be very glad if someone here could help me !!! I'm stuck on this and can't find a solution so far...

Alicia

I attach the .txt files corresponding to the .geo files with merge .spep. The geom.txt corresponds to my complex geometry and test_bump.txt to the simple one
Attached Files
File Type: txt geom.txt (1.9 KB, 11 views)
File Type: txt test_bump.txt (152 Bytes, 8 views)
djamel likes this.
Alicia is offline   Reply With Quote

Reply

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
[ICEM] Icem meshing problem in T junction geometry Abdullahkhan0070 ANSYS Meshing & Geometry 2 November 27, 2017 12:16
Problem with 'Mapped Face Meshing' RobertW FLUENT 0 November 19, 2016 16:39
meshing problem with huge and complicated geometry mirvakili Mesh Generation & Pre-Processing 3 June 13, 2015 01:41
Gambit meshing problem to following geometry ahmadmln ANSYS Meshing & Geometry 2 October 21, 2014 02:49
Problem meshing turb. blade tip clearance geometry Balu FLUENT 0 June 7, 2008 22:10


All times are GMT -4. The time now is 10:54.