I often find in the literature some numerical tests use CAD and mesh models. I also want to reproduce their results or test my algorithms on those models. But I am not trained to use CAD or mesh tools. I tried to get cad models from CAD website such as `grabcad'. But I often found it difficult to generate a mesh for a CAD model: sometimes gmsh says the model is incorrect. Do you know some good website providing such models ready for FEM simulation?
I've used examples from:
- INRIA: huge number of meshes in many file formats
- Large Geometric Models archive: handful of very big meshes in .ply format
- Stellar: a program for improving tetrahedral meshes; has a few examples on its website
Purely a matter of preference, but I like Tetgen for 3D tetrahedral mesh generation more than gmsh. While gmsh has more features, I find that I don't need most of them and I'd rather use a file format that's easier to parse / write.