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Old   June 7, 2006, 10:07
Default 3D mesh adjacency
  #1
Arambatzis George
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I am CFD student and I have to write a 3D CDF code using Discontinuous Galerkin.

I have to use unstructured meshes. For the mesh generation I can use GridGen, Gambit or ANSA.

Does anybody know if there is an easy way to obtain the adjacency of the elements? These generators does not export this information.

Thanks a lot.
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Old   June 7, 2006, 19:57
Default Re: 3D mesh adjacency
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George
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Hello there! My opinion is that if you have time, write your own grid generation code. You gain lots of experience and "understand" your geometry better, but the bad thing is that it will not be as good the mesh as with commercial products. But is the point truly there???

Are you from Greece? Eisai synadelfos?
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Old   June 7, 2006, 21:42
Default Re: 3D mesh adjacency
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Renato.
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It's unlikely mesh generators not exporting connectivity data. All unstructured mesh softwares I've already used export such kind of essential information.

Any way, try out the following unstructured meshers:

NETGEN: http://www.hpfem.jku.at/netgen/ (very intuitive and efficient for simple models)

TETGEN: http://tetgen.berlios.de/

Cheers

Renato.

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Old   June 8, 2006, 05:07
Default Re: 3D mesh adjacency
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Arambatzis George
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thanks a lot. I will try your idea

Synadelfos ki egw. Apo panepisthmio Krhths.
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