Reflect filter in ParaView

[Chenchen Liu]

Dear all,

I have output vtu files which are plotted in ParaView. In my simulation, I computed the half domain. For the post processing, I want to use Reflect filter in ParaView to get a full domain. However, it looks that no matter I use Reflect or Transform, the full structure is not accurately symmetric (See the attached figures). 

     

I know it is the group for deal.ii, and I am really appreciated if someone could help me in ParaView. Thank you in advance.

Best,

Chenchen

[Jean-Paul Pelteret]

Dear Chenchen,

With the way that we output data, Paraview cuts each quadrilateral into two triangles for the purpose of visualisation. So what you see is a linear interpolation of the data, and not a bilinear interpolation (which I’m guessing you were expecting if you used FE_Q elements). There is little that you can do other than to refine your solution until you just don’t see these artefacts anymore. 

I hope that this answers your question.

Kind regards,

Jean-Paul

On 28 Sep 2017, at 21:54, Chenchen Liu <ccliu...@gmail.com> wrote:

Chenchen

[Bruno Turcksin]

Chenchen,

here is the function you want to use to do what Jean-Paul advise you to do http://dealii.org/8.5.0/doxygen/deal.II/classDataOut.html#a5eb51872b8736849bb7e8d2007fae086 You need to choose n_subdivisions > 1.

Best,

Bruno

[Chenchen Liu]

Thank you Bruno and Jean-Paul. Very useful suggestions.

Best,

Chenchen

在 2017年9月28日星期四 UTC-4下午5:19:15，Bruno Turcksin写道：