Dear deal.ii team,
I am currently at the stage of choosing a transient solver for our
deal.ii-based software OpenFCST. The solver will be applied to solving
nonlinear transport and reaction problems. After days of research, I found
two options:
1. Variable order, variable step BDF schemes (
Anup,
I wanted to know the condition number of my system_matrix and hence I have
used the line in blue (below) in my CG solve function.
It shows the condition number. But in the documentation the definition of this
is not mentioned.
You mean the documentation is missing a definition of what t
Thank you!
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Thomas,
My initial mesh is not great - here's where I begin:
|
|GridGenerator::hyper_sphere(triangulation,Point(0,0,0),1.0);
triangulation.set_all_manifold_ids(0);
triangulation.refine_global(initial_global_refinement);
|
|/* interpolate the map from triangulation to desired geometry for the
>
> I can't say whether that's the same problem that is commonly reported in
> the
> literature, but this sort of mesh entanglement is the motivation for
> people to
> look at Arbitrary Lagrangian Eulerian (ALE) methods, instead of just
> Eulerian
> methods.
>
> Can you show a picture of yo
On 11/15/2016 10:10 AM, Michael Harmon wrote:
Not sure if its too late for this, but here are some publications thanks to
deal.ii!
Never too late!
@phdthesis{Harmon2016,
Title= Numerical algorithms based on Galerkin methods
for the modeling of reactive interfaces in pho
Just to follow up on this, many moons later: The fix for this problem turns
out to be only one line long. That didn't make it easier to find, though
:-) It can be found at https://github.com/dealii/dealii/pull/3589 and
should become part of the next release.
Best
Wolfgang
--
The deal.II pr
dim=2
template
void Step12::integrate_cell_term (DoFInfo& dinfo, CellInfo& info)
{
const FEValuesBase& fe_v = info.fe_values();
const std::vector>& grad = info.gradients[0][0];
}
When I call grad[0][0] it gives segmentation fault.
Could any one tell how to access the gradie
Hamed,
Am Dienstag, 15. November 2016 19:09:18 UTC+1 schrieb Hamed Babaei:
>
> Hi all,
>
> Following step-45, I am going to implement periodic boundary condition on
> my code for a Thermo-elastic problem, in which the thermal and elastic
> parts are solved separately (I have two different dof_ha
In addition I just tried to apply periodic boundary condition constraints
at the end of assembly using, void ConstraintMatrix::condense.
However, it seems this function doesn't work with
TrilinosWrappers::sparsematrix but dealii ones.
Thanks
--
The deal.II project is located at http://www.dea
Hi all,
Following step-45, I am going to implement periodic boundary condition on
my code for a Thermo-elastic problem, in which the thermal and elastic
parts are solved separately (I have two different dof_handelers for
temprature and displacement fields without any block structure). I am
won
> Anyone else have this issue?
If you inspect the page on chrome you will get:
index.html:1 Mixed Content: The page at
'https://urldefense.proofpoint.com/v2/url?u=https-3A__mdh266.github.io_PECS_index.html&d=CwIBaQ&c=Ngd-ta5yRYsqeUsEDgxhcqsYYY1Xs5ogLxWPA_2Wlc4&r=4k7iKXbjGC8LfYxVJJXiaYVu6FRWmEjX38S
Hej Mike,
sometimes I also use latex for code documentation with doxygen, for an
equation line:
\f[
\partial_t u -\nabla \cdot \epsilon \nabla u + \boldsymbol b \cdot
\nabla u = f\,,\quad \text{in } \Omega \times I\,,
\f]
and
\f$ \Omega = (0,1)^d \f$
for latex within the text line.
I'
Not sure if its too late for this, but here are some publications thanks to
deal.ii!
@Article{HaGaRe-JCP2016,
Title= Numerical algorithms based on Galerkin methods
for the modeling of reactive interfaces in photoelectrochemical (PEC) solar
cells},
Author
Hi,
I used deal for my phd work, loved using it and wanted to put my code up on
github. I spent a lot of time documenting it with doxygen, but latex
equations only work on my local machine and not on github:
https://mdh266.github.io/PECS/index.html
Anyone else have this issue?
Thanks!
Mike
Hello all,
I wanted to know the condition number of my system_matrix and hence I have
used the line in blue (below) in my CG solve function.
It shows the condition number. But in the documentation the definition of
this is not mentioned. I mean when I store
my system matrix and calculate its max
Hi Martin,
Cool, thanks for the prompt reply.
Kind regards,
Denis
> On 15 Nov 2016, at 14:59, Martin Kronbichler
> wrote:
>
> Hi Denis,
>
>
>
>> I wonder if it possible to re-use FEEvaluation within each cell to calculate
>> integrals of multiple right-hand-side like vectors.
> Yes, you
Hi Denis,
I wonder if it possible to re-use FEEvaluation within each cell to
calculate integrals of multiple right-hand-side like vectors.
Yes, you can re-use an FEEvaluation object. As soon as you call
submit_value(), you will write into the data field that is used by
integrate(), which in t
I wonder if it possible to re-use FEEvaluation within each cell to
calculate integrals of multiple right-hand-side like vectors.
Something along these lines:
for (unsigned int cell=0; cellhttp://www.dealii.org/
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