Update: Please disregard my last question. I found some guidance on this
thread from 2013 concerning Robin
BCs: https://groups.google.com/g/dealii/c/JSWctuiEVoc/m/8Im_ME_8f6wJ
Thanks again,
MJ
On Wednesday, September 15, 2021 at 2:21:10 AM UTC+1 Morris Jowas wrote:
> Hello everyone,
>
>
>
Dear Daniel,
Thank you a lot for the hint, it makes perfect sense! I also correctted the*
interpolate_boundary_values* call as follows:
*templateclass DirichletBoundaryValues : public Function> { public: DirichletBoundaryValues():
Function>(1) {} virtual
Mariia,
That's a problem a little more complicated to solve. Basically, we are not
instantiating the template for complex and BlockSparseMatrix.
If you are OK with recompiling deal.II, you should modify source/numerics/
matrix_tools.inst.in so that all overloads are also compiled for complex
Dear Deal.II community,
I'm getting trouble in developing new code based on step-25. In step-25,
the equation to be solved is u_tt−∆u=−sin(u) and the tutorial shows me how
to solve such a nonlinear problem.
Specifically, the tutorial tells me how to calculate (sin(u),φ_j)_Ω in
detail. So I 'm
in case you wonder what is going on in the heads of the principal developers
of deal.II: I will be giving a webinar tomorrow on this topic:
https://bssw.io/events/webinar-what-i-learned-from-20-years-of-leading-open-source-projects
I believe that you have to register (it's free!) but also
On 9/15/21 6:33 AM, Toddy Liu wrote:
I'm getting trouble in developing new code based on step-25. In step-25, the
equation to be solved is u_tt−∆u=−sin(u) and the tutorial shows me how to
solve such a nonlinear problem.
Specifically, the tutorial tells me how to calculate (sin(u),φ_j)_Ω in
Hello, professor Wolfgang
Thank you very much for your reply and it really helps me. You explained
how to deal with the latter case (V'(u) . grad u, phi_i) and I've got the
point how to solve this. Addtionally. how about the former case -(V(u),
grad phi_i). Specifically, how to construct the
Dear Daniel,
Thank you a lot for the hint, makes perfect sense! The
MatrixTools::apply_boundary_values works well now! But I believe i also
need to adjust the VectorTools::interpolate_boundary_values accordingly.
Right now i have defined a template for pressure component boundary values:
