1) I tried running by with 1,2 and 3 Dimensions it run successfully .
The time taken to run by different dimensions are as follows:
1D- 0.015625 seconds
2D- 5.8 minutes
3D- 29.22 hours.
On Thursday, 2 November 2023 at 13:16:39 UTC+5:30 [email protected] wrote:
> 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.
>>
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>>
>
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