[Gmsh] Defining regions in Gmsh

Felix Salazar felix.a.salazar at gmail.com
Sat Jun 30 06:15:36 CEST 2018

Hello Ajay,

If I understand correctly, you want to define region 1 (your orange
rectangle, without the triangular hole), and region 2 (the triangular
hole), and somehow compute the difference. Is that correct?

You might run into something called non-conforming meshing, which is having
an interface (the boundary of the triangular hole) where the position of
the boxes and elements doesn't necessarily match.

However, GMSH has the option to define holes. So there won't be any
geometric algebra. Check the documentation about defining surfaces with

On Thu, Jun 28, 2018, 5:55 AM Ajay Singh <ajay.iit.physics at gmail.com> wrote:

> Dear Sir/Ma'am,
>                             Very first I would like to thank you very much
> for providing very useful open source Gmsh.
> Here I have a question regarding defining various regions in Gmsh. I want
> to define a physical region inside another physical region.
> Can I define it like Region("3")= Region("1") -Region("2") ?
> For example:
> I would be very thankful for your support.
> Best Regards,
> Ajay Singh
> _______________________________________________
> gmsh mailing list
> gmsh at onelab.info
> http://onelab.info/mailman/listinfo/gmsh
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://onelab.info/pipermail/gmsh/attachments/20180630/a7816582/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image.png
Type: image/png
Size: 16619 bytes
Desc: not available
URL: <http://onelab.info/pipermail/gmsh/attachments/20180630/a7816582/attachment-0001.png>

More information about the gmsh mailing list