Hello everyone!
This is deal.II newsletter #72.
It automatically reports recently merged features and discussions about the
deal.II finite element library.
## Below you find a list of recently proposed or merged features:
#7862: Add documentation for initialising Trilinos AMG constant modes (p
Dear Pai,
I'm very interested in solving a problem with characteristics very similar
to yours. Consequently, I run your modified code of step-17.cc for 30*30*30
cells and for me it takes 6.43s with cg with -np 2 instead of 0.39s. Do you
have any idea where this huge speed up migth come from? I
Hello everybody,
having created a grid (let's call it coarse grid), copied and refined it
globally two times (let's call this one fine grid), I struggle with
transferring an interpolated function from the coarse to the fine grid. I
am using deal.ii 8.5.1.
First I interpolated the function on t
Hi. Thanks a lot for the advice.
I will Try it tomorrow and send a response whether it works.
Regards
Gabriel
Gabriel Peters
Endenicher Str. 310
53121 Bonn
00491525/5478185
gabriel.pet...@koeln.de
Am 26.03.19 um 13:32 schrieb Daniel Arndt
> Gabriel,
>
>
> > I am trying to apply boundary con
On 3/26/19 5:29 AM, Konrad wrote:
> Issue resolved. I used the wrong sparsity pattern. That was just a typo in
> the
> code. Sorry for having bothered you with this but anyway:
Well, glad you found the problem.
Also, doh for deriving the compatibility condition -- that was too simply for
me no
Gabriel,
> I am trying to apply boundary conditions on a Sparsematrix with two
> Dof_handlers in a parallel::distributed::trinagulation setting for the
> Step-35 tutorial.
> ( Same context as in this thread
> https://groups.google.com/forum/#!topic/dealii/9ibgrQ0mFBs).
>
> At initializing the
Issue resolved. I used the wrong sparsity pattern. That was just a typo in
the code. Sorry for having bothered you with this but anyway:
Many thanks,
Konrad
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Hi Wolfgang,
So this was why I couldn't figure it out.
The mesh has over 10 cells in it, it is super refined. And oddly, when
the refinement level is less, it doesn't blow up. It's only after a certain
point.
it is an even global refinement, starting from a hyper divided rectangle.
no fa
Hi Wolfgang,
> Precisely what do you see?
>>
>
> Chaotic distribution of values in the solution several orders of
> magnitudes higher than what I expect.
>
>
>> I haven't heard of this, but that doesn't mean anything. How do you
>> actually derive the compatibility condition in the mixed ca
Hey everyone,
I am trying to apply boundary conditions on a Sparsematrix with two
Dof_handlers in a parallel::distributed::trinagulation setting for the
Step-35 tutorial.
( Same context as in this thread
https://groups.google.com/forum/#!topic/dealii/9ibgrQ0mFBs).
At initializing the gradient_
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