[Gmsh] Basic refinement

[Amarpal Singh Kapoor]

Dear users,

I'm new to gmsh and am trying to refine a mesh in specific regions. Lets
consider my domain to be a unit square and my current aim is to have a
finer mesh along the boundaries. I'm using the method of attractor and
threshold to refine my mesh locally (like in t10.geo). I can have a
successful refinement on any 3 boundaries only. The moment I include the
4th edge in the edge list, I get an almost uniform mesh.

Q1. What is the reason behind this?

[image: Inline image 1]

Q2. Is there a better way of achieving this type of refinement?

I have attached my .geo file with this email.

Kind Regards,
Amar
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.geuz.org/pipermail/gmsh/attachments/20140701/8614691c/attachment.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image.png
Type: image/png
Size: 154830 bytes
Desc: not available
URL: <http://www.geuz.org/pipermail/gmsh/attachments/20140701/8614691c/attachment.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: mesh71_2d_box.geo
Type: application/octet-stream
Size: 991 bytes
Desc: not available
URL: <http://www.geuz.org/pipermail/gmsh/attachments/20140701/8614691c/attachment.geo>