Toddy, I would start with thinking about the time discretization scheme you want to use and in particular which terms you want to treat explicitly and which implicitly. After you have done that, you might still end up with a nonlinear problem in which case you should have a look at https://www.dealii.org/current/doxygen/deal.II/step_15.html and https://www.dealii.org/current/doxygen/deal.II/step_25.html.
Best, Daniel Am Mi., 25. Aug. 2021 um 09:11 Uhr schrieb Toddy Liu <[email protected] >: > Dear Deal.II community, > > I'm getting trouble in constructing system matrix of a complex PDE. My PDE > is a time-dependent equation, and in simplicity it seems like > > [image: screenshot.png] > U is the variable, t denotes the time. D, alpha, beta are constant. So > could you please give me some advice about doing this or any reference in > existing dealii examples. > > Thank you very much. > > -- > 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 on the web visit > https://groups.google.com/d/msgid/dealii/b239ae4a-a114-47a7-ad59-a275f8771239n%40googlegroups.com > <https://groups.google.com/d/msgid/dealii/b239ae4a-a114-47a7-ad59-a275f8771239n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- 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 on the web visit https://groups.google.com/d/msgid/dealii/CAOYDWb%2Bd7hp%2Bww7w9AKmYm1JnSwt8ZAFmig%3D5W_%3DZ-O6R14ORg%40mail.gmail.com.
