Dear Marek, > I have programmed navier-stokes for 2-D cube, where to edges are half > cut. On the one half of first edge is parabolic velocity array, on the > second half of first edge is zero dirichlet. On the one half of second > edge is zero dirichlet, on the second half of is do-nothing condition. > Next two edges are dirichlet zero. After computation the do-nothing > and parabolic velocity array spread all over the corresponding edge. > Why has it happened? In attachment is .vtk file with solution, which > is not desired. Please help me!!!
Are you sure that you set the boundary indicators after you have refined at least once (so that there are two different faces on either edge that get different indicators)? It seems to me that you always overwrite the homegeneous Dirichlet indicator by the parabolic and do-nothing indicators, respectively. Best, Martin _______________________________________________
