[Gmsh] Gmsh how to extract the node ID's on a given 3D Mesh Boundary Surface

[Christophe Geuzaine]

> On 17 Jun 2018, at 11:12, Zuheyr Alsalihi <zuheyr at gmail.com> wrote:
> 
> 
> Hello,
> Is there a way to get the node ID's of  the elements that lie on a boundary surface in a 3d solid mesh where I mark the
> surface by creating a physical surface. 

Load the mesh and retrieve the elements tagged with the physical group; then loop over the elements and get the nodes.

(The gmsh::model::mesh::getNodesForPhysicalGroup function in the Gmsh API does just that.)



> 
> Thank you for reading!
> 
> Best,
> -- 
> Zuheyr Alsalihi
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— 
Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science 
http://www.montefiore.ulg.ac.be/~geuzaine

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