Dear all,

I hope this is the correct place to post a question or maybe a proposal for a new feature.

I’m using the “Crack” plugin in Gmsh to duplicate a line inside a 2D domain and I’d like to know if it is possible to define the duplicated vertices and curves as new “Physical Entities”.

For example, let’s say that I have a simple line embedded on a 2D surface. I define this line as a “Physical Line” called “Thin” and its boundaries as “Physical Points” called “Left” and “Right”, respectively. Then, after meshing, I can duplicate the “Right” vertices and keep the “Left” side sealed. For that, the plugin “Crack” is applied as

Plugin(Crack).Dimension =1;

Plugin(Crack).PhysicalGroup =”Thin”;

Plugin(Crack).OpenBoundaryPhysicalGroup = “Right”;

Plugin(Crack).Run;

After the application of the plugin, I’m able to create a new “Physical Line” for the “negative” side of the crack and it works fine (the plugin creates a new entity on the .msh file). I called this new line “Thin-” and the old I called “Thin+” as presented on the image below.

However, I was wondering if it’s possible to define a new “Physical Point” for the “Right” boundary on the “negative” side of the crack (“Right-“), so that I have two different “Physical Points” on the right side. It will allow me to impose different boundaries conditions for each point later in GetDP.

Thanks in advance,

Bruno Alves