Hello,
I believe I solved partially the problem, do
not bother to answer the thread without my further
specification.
M
2016-07-29 10:17 GMT+02:00 Vinetou Incucuna :
> Hello,
> thank You for response and the advices.
>
>
> >> LA::Vector vec_old_solution(dof_handler_nse.n_dofs());
> >>
>
Hi Marek,
If you do manage to determine an acceptable solution, perhaps you'd be
willing to post the solution for other to reference at some later stage?
Thanks,
J-P
On Saturday, July 30, 2016 at 10:28:13 AM UTC+2, Marek Čapek wrote:
>
> Hello,
> I believe I solved partially the problem, do
> n
Jiaqi,
the algorithm in step-35 is the one that is proposed in
"L. Timmermans, P. Minev, and F. Van De Vosse, “An approximate projec-
tion scheme for incompressible flow using spectral elements”, International
journal for numerical methods in fluids, vol. 22, no. 7, pp. 673–688, 1996."
The veloc
krei,
If you want to solve different PDEs on different domains that can be
discretized by a common mesh, the preferred approach is to use a hp-vector
finite element.
This means that on each of your subdomains all blocks of your finite
element but one are of type FENothing.
You might want to hav
Hello,
problem was,
- that I have some meaningless calls for
/*current_solution_phase.reinit(locally_owned_dofs_phase,
locally_relevant_dofs_phase, mpi_communicator);
current_solution_phase = 0;
*/
/*solution_update.reinit(locally_owned_dofs_phase,
I used the methodology of step-18 for step-17 which showed memory usage
improvements. I have attached a new version of step-17 that allow selecting
between the NEW and OLD. I also attached the results from both and another
plot. I don't know whether this version will work with more than one
pro
ah, sorry for interruption.
>From the log it is evident, than the Navier-Stokes
equation setup times are reasonable and that the
constraint matrix preparation, including Boundary
conditions.
Is this evaluation sound, should I strive for better times?
Thank You
Marek
2016-07-30 13:06 GMT+02:00 V
Sorry, I wanted to say, that the imposition of boundary
conditions in the setup is apparently dominant.
Is this the general case in your applications?
Thank You
Marek
2016-07-30 13:09 GMT+02:00 Vinetou Incucuna :
> ah, sorry for interruption.
> From the log it is evident, than the Navier-Stokes
Daniel,
1.) You can use complex valued algebra if you split your problem into two
equations. Apart from that most of the algebra objects can be used with
std::complex.
At the moment, this is not true for constraints given by a ConstraintMatrix
object, but this is WIP (https://github.com/dealii/
Daniel,
the algorithm in step-35 is the one that is proposed in
"L. Timmermans, P. Minev, and F. Van De Vosse, “An approximate projec-
tion scheme for incompressible flow using spectral elements”, International
journal for numerical methods in fluids, vol. 22, no. 7, pp. 673–688, 1996."
Inter
On 07/30/2016 05:08 AM, Pete Griffin wrote:
I used the methodology of step-18 for step-17 which showed memory usage
improvements. I have attached a new version of step-17 that allow selecting
between the NEW and OLD. I also attached the results from both and another
plot. I don't know whether thi
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