On 5/28/25 22:01, C B wrote:
Although there are lots of Tutorials, because deal.ii can tackle such as wide
spectrum of PDEs, each tutorial seems overwhelming and does not directly
address the immediate or specific need of a new user.
For example, let's say a new user is interested in solving basic linear
elasticity cases on simple domains (2/3d), with different boundary conditions,
exporting displacements and stresses, and with different linear equation
solvers to see what is the performance of the software when increasing the
model size.
This is perhaps one of the most basic uses of FEA that a large number of
people need. However, I could not find a repository with a (large) number of
documented test cases on this topic. This would fit the philosophy of "learn
by example", as opposed to learn most of the theory/documentation and figure
out how to solve your specific case.
Yes, these are all good points. We do provide quite a lot of documentation,
but it would of course be nice to have even more. In practice, there are many
deal.II-based codes that people have developed and that you can probably find
on github. I imagine that there are tools that help you search the millions of
repositories on github for specific criteria (though I don't know what these
tools are). Given the many many uses people have found for deal.II, there's
almost certainly something out there that does what you need.
Please, let me know if such a repository exists, and if it doesn't, wouldn't
such a repository help lots of new users who need to get up to speed very
quickly, and who do not have the time or the knowledge to go over lots of
tutorials dealing with topics that do not help them to address their immediate
needs?
We do have the code gallery that is intended to fit your purpose:
https://dealii.org/gallery_applications/code_gallery/
We always hope that people contribute more codes to it.
Of course, in practice there is always the tradeoff between providing
well-structured and thought-out documentation, and providing so much that it
becomes hard to search for things. It's hard enough these days to find which
of the ~90 tutorials is right for you. Imagine if the code gallery had 500 codes.
That all said, we'd love for people to propose ideas for how to structure
documentation better, and perhaps to help make that happen!
Best
W.
--
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Wolfgang Bangerth email: [email protected]
www: http://www.math.colostate.edu/~bangerth/
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