On 2/9/19 9:52 PM, [email protected] wrote: > | > Cycle 6: > Number of active cells: 1916 > Number of degrees of freedom: 8993 > u square 6: 0.0572988 grad u square 6: 117.562 > Cycle 7: > Number of active cells: 3860 > Number of degrees of freedom: 18353 > u square 7: 0.0577537 grad u square 7: 258.867 > > | > > And I don't know why the differences are so huge, and attach is my test code.
You mean you are wondering why the "grad u square" term grows with the size of the problem but "u square" does not? I don't know either (and the one place I looked at in your code seems correct to me), but what happens if you do global refinement? Does it increase with a fixed ratio from one step to the next? Best W. -- ------------------------------------------------------------------------ Wolfgang Bangerth email: [email protected] www: http://www.math.colostate.edu/~bangerth/ -- 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 [email protected]. For more options, visit https://groups.google.com/d/optout.
