On 05/02/2013 10:11 AM, Mikhail Artemiev wrote: > As I know Gmsh can't build parallelepipedal grids (3D case of rectangular > ones) for arbitrary geometry. You have to use transfinite algorithm and > extrusions to get them. Extrusion isn't mandatory, as long as the edges, surfaces and volumes are adequately defined and selected to be meshed with Gmsh's transfinite algorithm. Rui Maciel