[Gmsh] Duplicate Nodes at a Physical Interface

Christophe Geuzaine cgeuzaine at uliege.be
Fri Jul 27 07:53:30 CEST 2018

> On 16 Jul 2018, at 13:19, Sanghavi, Chaitanya <chaitanya.sanghavi at siemens.com> wrote:
> Hi, 
> Firstly, I really appreciate the work done in Gmsh and it’s really a wonderful tool for researchers. Thanks for this.
> I have a question about Node duplication at a physical interface of a computational domain. Imagine I have a computational domain in 2D with two rectangles sharing a physical interface.
> I want to duplicate nodes at this physical interface in both the rectangles.  

By default Gmsh never duplicates nodes.

You can use the Plugin(Crack) to explicitly generate duplicate nodes/elements on certain physical curves/surfaces.


> See the Fig.
> So basically, I can create a tag for the entities on this physical interface.
> Physical Line (1) = Line {A,B} where A,B are the points on the physical interface.
> I need the same entities i.e. 
> Physical Line (2) = Line{B,A} in the neighboring rectangle. 
> Since I use the same line, I cannot create this tag. 
> If its possible to create additional line elements on this physical interface from both sides, this would be the ideal scenario.
> Important point is that the mesh should be conformal at this physical interface.
> Chaitanya Sanghavi
> <Query.PNG>_______________________________________________
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Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science 

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