On 2/27/19 2:40 AM, chucui1...@gmail.com wrote:
>
> 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
Chucui,
have you solved this problem since?
It's not quite clear to me what exactly you are doing here, i.e., which of the
quantities you have above are *computed* on each mesh, and which ones are
interpolated from the previous mesh.
Best
W.
--
------------------------------------------------------------------------
Wolfgang Bangerth email: bange...@colostate.edu
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 dealii+unsubscr...@googlegroups.com.
For more options, visit https://groups.google.com/d/optout.
