Dear Prof. Arndt, I have used SolutionTransfer as you say, but if I set a phi_0 fixed, then project it into finite element space and get a vector phi_0_h, then I get phi_0_h/2, phi_0_h/4, phi_0_h/8 by using SolutionTransfer, but the norm of (phi_0_h- phi_0_h/2), (phi_0_h/2- phi_0_h/4), (phi_0_h/4- phi_0_h/8) are so big, and I cannot get exact value when I compute the convergence rate. So I wander how to deal with it?
And the attached is the test code, and the results is: phi_0_norm_58: 0.335377 phi_0_norm_68: 0.317158 phi_0_norm_78: 0.277344 Thank you very much! Best, Chucui -- The deal.II project is located at http://www.dealii.org/ For mailing list/forum options, see https://groups.google.com/d/forum/dealii?hl=en --- You received this message because you are subscribed to the Google Groups "deal.II User Group" group. To unsubscribe from this group and stop receiving emails from it, send an email to dealii+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
