Thansk Peter. Appreciate your feedback. Best, Wayne
在2023年3月18日星期六 UTC+8 16:24:55<peterr...@gmail.com> 写道： > I don't see a remove function in AffineConstraints. What you could do is > to create a new AffineConstrains instance based on the old one by ignoring > the unwanted entry. See also: > https://github.com/dealii/dealii/blob/a654d1fe45cc11c9dbbbcaaef6f53320f459baa2/include/deal.II/lac/affine_constraints.templates.h#L526-L541 > > > I only see mixed order formulation but not mixed element type in > tutorials. > > Maybe you could take a look at the `tests/` folders. Maybe there is an > example!? > > Hope this helps, > Peter > > On Saturday, March 18, 2023 at 4:09:57 AM UTC+1 yy.wayne wrote: > >> Another question relates to singular field that, do we support mixed >> finite elements (with cg elements and dg elements at different location)? >> I only see mixed order formulation but not mixed element type in >> tutorials. >> >> 在2023年3月18日星期六 UTC+8 09:45:50<yy.wayne> 写道： >> >>> Hello my friends, >>> >>> I'm working on problems with singularity fields. Is it possible to >>> remove a constraint line/entry at specific DoF? Say at the edge of a corner >>> in 3d, the two faces intersect at the corner are already interpolate with >>> zero boundary condition. However I want to un-constraint the DoF exactly at >>> the corner rather on faces (for FE_Q elements). Is there a function to >>> remove constraint on already constrained DoFs? >>> >> -- 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. To view this discussion on the web visit https://groups.google.com/d/msgid/dealii/079ea6dc-367c-4fdd-95c5-cd843754fea1n%40googlegroups.com.
