Could it be that you are not using higher order in the output result? https://github.com/dealii/dealii/wiki/Notes-on-visualizing-high-order-output
L. > On 30 Nov 2024, at 13:14, meng deng <[email protected]> wrote: > > for example, i created a 4 grids mesh with 3-order DGQ<2> in step-24, > GaussPluse expression: exp(-1000 * ( (x-x0)^2 + (y-y0) ^ 2 )). > distribution of the quadrature points distribution of :<quad_points.png> > The initial value plot doesn't seem to have that many control points: > <initial_value.png> > > > 在2024年11月30日星期六 UTC+8 13:10:20<meng deng> 写道： > I trid the same initial value in step-24 as step-89, but step-89 is smoother > than step-24, and step-89 needs less grids. I also set the fe.degree -> 3. > > > -- > 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]. > To view this discussion visit > https://groups.google.com/d/msgid/dealii/2cb04ebc-da4a-4bb7-b7b6-71b9ad6b3d77n%40googlegroups.com. > <quad_points.png><initial_value.png> -- 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]. To view this discussion visit https://groups.google.com/d/msgid/dealii/446E187E-732F-4B42-974A-85778C47ACFE%40gmail.com.
