Thank you !! solve the problem with the second method!
I really appreciate this!
Jaekwang Kim
2017년 3월 4일 토요일 오후 1시 37분 40초 UTC-6, Jean-Paul Pelteret 님의 말:
>
> Hi Jaekwang,
>
> The error message is pointing you to the fact that when you call run() a
> second time you end up trying to rebuild the triangulation on top of the
> one that you have the first time run() was called. There are a few ways
> that you can work around this. Here are two suggestions:
>
> 1. Create a new instance of the laplace_problem each time you change the
> boundary value
>
> {
>
> bvalue = 1;
>
> Step4<2> laplace_problem_2d;
>
> laplace_problem_2d.run ();
> }
>
> {
>
> bvalue = 2;
> Step4<2> laplace_problem_2d;
>
> laplace_problem_2d.run ();
>
> }
>
>
> 2. Separate the run() and make_grid() calls.
>
> {
>
> Step4<2> laplace_problem_2d;
> laplace_problem_2d.make_grid ();
>
>
> bvalue = 1;
> laplace_problem_2d.run ();//Remove make_grid() from run()
>
>
>
> bvalue = 2;
>
> laplace_problem_2d.run ();
>
>
>
> }
>
> You could of change your boundary value in other way, such as in a for
> loop or using a MultipleParameterLoop
> <https://www.dealii.org/8.4.1/doxygen/deal.II/classMultipleParameterLoop.html>
> .
>
> I hope this helps you.
>
> Regards,
> Jean-Paul
>
>
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