Using a hybrid mesh for a simple pipe
Posted February 23, 2012 at 22:18 by rikio
The method to create a hybrid mesh.
Originally Posted by PSYMN
You need to create some construction geometry between where you want the two types of mesh (a cylinder in this case). Then generate a tetra mesh on the outside and a hexa blocking on the inside. It is important that this construction geometry be uniquely named and that both mesh types are projected to it and its perimeter... Then go to Edit Mesh => Merge => Merge meshes. You can check the help from there to get the rest of the way.
For optimal results, try to match the volume of the tetras to the volume of the hexas. This usually requires you to have hexas at the surface that are thinner than they are wide. An aspect ratio of about 3 usually works well enough, but you can calculate the exact number (I forget right now).