[ICEM] Checking the mesh -> problem of single edges

PSYMN · September 22, 2012, 12:35

That Single Edges Check is listed under "possible problems", not Errors.

A Single Edge is just an edge of an element that has no other elements attached to it. That doesn't sound so bad does it?

It could be a problem in a 3D model where you want the exterior shells to be closed before you can generate a delaunay fill because it could represent a hole you need to close... In a 3D model, it could also be little tags of mesh that you want to remove (this is what the auto fix assumes).

It is not usually a problem for a 2D mesh (or shell mesh)... You should expect single edges all around your perimeter!

However, if you see internal single edges where you don't expect them, that may be a problem (a gap or connectivity problem).

Clecl · September 24, 2012, 05:04

Thank you very much! It reassures me! I have indeed single edges all around my perimeter, and only there.
Thanks a lot!

September 22, 2012, 12:35	SINGLE EDGES are Expected for a 2D model	#21
PSYMN Senior Member Simon Pereira Join Date: Mar 2009 Location: Ann Arbor, MI Posts: 2,663 Blog Entries: 1 Rep Power: 47	That Single Edges Check is listed under "possible problems", not Errors. A Single Edge is just an edge of an element that has no other elements attached to it. That doesn't sound so bad does it? It could be a problem in a 3D model where you want the exterior shells to be closed before you can generate a delaunay fill because it could represent a hole you need to close... In a 3D model, it could also be little tags of mesh that you want to remove (this is what the auto fix assumes). It is not usually a problem for a 2D mesh (or shell mesh)... You should expect single edges all around your perimeter! However, if you see internal single edges where you don't expect them, that may be a problem (a gap or connectivity problem). __________________ ----------------------------------------- Please help guide development at ANSYS by filling in these surveys Public ANSYS ICEM CFD Users Survey This second one is more general (Gambit, TGrid and ANSYS Meshing users welcome)... CFD Online Users Survey

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September 24, 2012, 05:04		#22
Clecl New Member Join Date: Sep 2012 Posts: 13 Rep Power: 14	Thank you very much! It reassures me! I have indeed single edges all around my perimeter, and only there. Thanks a lot!