Dear Wolfgang, Thank you very much. I will try to see what happened by myself.
Best, Xiang On Wednesday, 8 April 2020 10:46:04 UTC-7, Wolfgang Bangerth wrote: > > On 4/8/20 10:20 AM, 孙翔 wrote: > > > > I tried the zero boundary and it can get a correct answer. I truly used > the > > function for the matrix once in a time loop. In the new time loop, I > have > > updated the system matrix and vector. I am trying to debug it. Could you > help > > me review the code? If it is a stupid mistake, please just tell me it is > and I > > will try to continue to debug it. If it is due to some function usage or > > mathematics, please help me with some details because I am just a > beginner and > > really want to learn more from dealii. > > I can't debug everyone's code here on this mailing list, I'm afraid. I had > a > brief look and the setup of the system matrix looks correct/reasonable to > me. > But then you describe that you have two methods of which one works and the > other doesn't, and I don't know what this program implements; I also don't > know what the *expected* solution for this program is. So I'm afraid > you'll > have to discuss this yourself. But as in the last few days, I'm happy to > provide ideas for how to debug. You'll just have to do it yourself... > > Best > W. > > -- > ------------------------------------------------------------------------ > Wolfgang Bangerth email: [email protected] > <javascript:> > 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 [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/dealii/a7ab689e-9684-4d00-8e8f-7003a1948c75%40googlegroups.com.
