Hi Toby,
I appreciate your additional comments.
Thanks and best,
Thomas
On 05/31/2017 02:16 PM, Tobi Young wrote:
I'm going to jump in with one of my random comments uninvited.
Hopefully you don't mind. :-)
I already run the example with uniform mesh, hence global
refinement with 0 refinement cycles.
The problem is, a specimen with 100 or 1000 elements is difficult
to check due to the terminal output being flooded.
I think what Thomas is kindly trying to point out is, that a single
cell is a useless test case for almost all possible test cases that
deal with practical problems.
It seems your case is one of many examples.
Try 16 cells. Look at the data and then try 32 cells and compare.
Maybe write a procedure that will look at the data for you and put
useful results into a file for you to look at? Can you plot results
with gnuplot (for example)?
Machines are stupid, they only can do what you tell them to do! So,
why not reserve a day or so to calmly write the algorithms needed to
extract the data you want in a way you can visualise?
You need to do your analysis in some way. You can not expect a machine
to do things for you. You have to instruct her what it is you want to
be done. Write the code... :-)
That is scientific computing.
I could just output the result for one element, but then wheres
the difference.
Big difference in numerical analysis of this kind! ;-)
I am not being unkind - though, maybe its time to get dirty, write
some code, and look at the numbers, in order to figure out where the
problem lies. If you can do that, there are alot of dealii users and
developers that will help you out, and you'll get there in the end. :-)
Best,
Toby
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