Hi, 1) You can try to run it on your own, and see if it works :) 2) The value "1000" is probably the max number of iterations allowed (The second argument is tolerance) So maybe the solution converges before that, so you don't notice any difference in execution times. Also, from what I understand, you need to change the initial conditions, boundary conditions or domain size to alter the problem. Regards,
On Thu, 2 Nov 2023, 10:46 Jai, <[email protected]> wrote: > Hello All, > 1) In the tutorial of deal.ii , an example of wave equation in 2D is given > in step-23. Does changing ( WaveEquation<2> wave_equation_solver) to > (WaveEquation<1 or 3> wave_equation_solver) change the dimension of wave > equation and will it be working fine. > If not please specify how can we change 2D wave equation to 1D and 3D or > if there are examples of 1D and 3D please let me know. > 2) How can we change the input data size of the wave equation. > template <int dim> > void WaveEquation<dim>::solve_u() > { > SolverControl solver_control(1000, 1e-8 * > system_rhs.l2_norm()); > SolverCG<Vector<double>> cg(solver_control); > cg.solve(matrix_u, solution_u, system_rhs, PreconditionIdentity()); > std::cout << " u-equation: " << solver_control.last_step() > << " CG iterations." << std::endl; > } > I tried changing 1000 to 10,000 and 100,000 But the time taken by the > program is still the same. > Thanks. > > -- > 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/7d54e428-1fb3-4bb9-a5d8-bd9284ad53b7n%40googlegroups.com > <https://groups.google.com/d/msgid/dealii/7d54e428-1fb3-4bb9-a5d8-bd9284ad53b7n%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/CAH2bA6Z7KF9hs3YjQqhD8m0uNE7tR5zyUWUTfEZZywz3H3bN_Q%40mail.gmail.com.
