> I am trying inviscid flow over a cylinder using DG scheme. For good > results, the boundary must be represented by second order elements. I > generate second order elements in gmsh.
Are you saying that you are generating meshes with curved boundaries that are described by quadratic functions? How are these represented in the output file? I thought gmsh format can only represent cells that are described by 4 (in 2d) or 8 (in 3d) vertices, which would of course know nothing about curved boundaries. > If this is so, what other grid options do I have to represent curved > geometries ? Which grid format should I use ? None of the current readers in GridIn support this. You have to attach (in your program) boundary objects that describe the curved boundary. Michael already pointed you in the right direction here. Later examples show how to use higher order mappings. Best W. ------------------------------------------------------------------------- Wolfgang Bangerth email: [email protected] www: http://www.math.tamu.edu/~bangerth/ _______________________________________________ dealii mailing list http://poisson.dealii.org/mailman/listinfo/dealii
