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-   -   Mesh hard points on faces (http://www.cfd-online.com/Forums/fluent/36010-mesh-hard-points-faces.html)

 Ashton Peters March 13, 2005 22:46

Mesh hard points on faces

I am trying to create a 3D model (let's say it's a cylinder), meshed with simple tets (i.e. triangles on the faces).

I want to be able to specify that there will be a nodal point at a specific location on the surface of the cylinder. Is there a way to somehow 'merge' a vertex into a face so that Gambit will put a node at a specific, user-defined location?

I know I can move the nodes on a face after it has been meshed, but if I have several (possibly hundreds of) points on the face that I want to be aligned with nodes it would be far too tedious to move them all individually.

This would seem to me to be a basic functionality of meshing software, but I can't seem to find how to do it in Gambit.

Ashton Peters Centre for Bioeingineering University of Canterbury Christchurch, NZ

 Luca March 14, 2005 05:27

Re: Mesh hard points on faces

if you split your boundary where you want a node to be created, then when you mesh you'll ha a node rigth there...Luca

 Ashton Peters March 14, 2005 16:30

Re: Mesh hard points on faces

Thanks for the reply. I don't quite understand what you mean though. I don't want a node at a specific location along an edge, I want a node at a specific location somewhere on a face (i.e. not along any existing edge).

If this is possible by "splitting the boundary", please let me know how.

Ashton

 Luca March 15, 2005 04:06

Re: Mesh hard points on faces

So you can split the surface into smaller surfaces. Luca

 Ashton Peters March 15, 2005 16:43

Re: Mesh hard points on faces

Ok, I think I know what you are meaning now.

However, this raises another problem. If I split the surface into smaller surfaces, sure, I can get a node at a specified internal vertex. The problem is then I also have additional edges within the area that the mesh will line up with. I don't want the mesh to align itself with internal edges within an area, rather I just want to specify a single point within the area.

I am beginning to think this can't be done with Gambit...

Ashton

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