Accuracy of results

There are lot's of tests that check the accuracy of Fluidity against measured data of various kinds. Existing examples can be found in the following directories
 - examples
 - tests
 - longtests (this is in a separate repository)

Together, these form part of our test suite.

For further details of the example, please refer to the Fluidity manual, which contains citations to the papers describing the original experiment/simulation.

In addition, a number of papers have been published using Fluidity and many contain validation and verification against both real-world and laboratory experiments. A list of publications can be found here: http://www3.imperial.ac.uk/earthscienceandengineering/research/amcg/publications/

Do you have any particular type of problem you wish to simulate? We might be able to point to more specific examples, tests or publications.

I hope that helps.

Thank you so much for the quick answer.

I think that works for me, for now!

Hello,

I am trying to simulate jet engine compressor at various RPM. Do you have any examples that you can point me to?

Thanks in advance.

Hi FazlurR,

Thanks for the question. It's probably better to start a new question, rather than tagging it onto an existing question.

As far as I know, no-one has attempted to use Fluidity for problems like that you have described, so it may not be the best software to use. I have no experience of doing such simulations, so I can't even point you to a useful test. Can you describe the problem in more detail (i.e. is it flow through a complex geometry, with inflow conditions specified?).

Digging in the back of my head, the blade profiles will be complex, the
flow will need to be compressible, and it is likely to go supersonic at
the blade tips (causing shock).

On 21/08/13 10:26, Jon Hill wrote:
> Question #233177 on Fluidity changed:
> https://answers.launchpad.net/fluidity/+question/233177
>
> Jon Hill posted a new comment:
> Hi FazlurR,
>
> Thanks for the question. It's probably better to start a new question,
> rather than tagging it onto an existing question.
>
> As far as I know, no-one has attempted to use Fluidity for problems like
> that you have described, so it may not be the best software to use. I
> have no experience of doing such simulations, so I can't even point you
> to a useful test. Can you describe the problem in more detail (i.e. is
> it flow through a complex geometry, with inflow conditions specified?).
>

In that case, you probably don't want to use Fluidity for this. Fluidity only has limited compressible flow capabilities and it doesn't deal with supersonic flows with shocks (due to a non-conservative formulation and lack of appropriate flux limiters).

Hi FazlurR,

I suggest you look at the code SU2 http://su2.stanford.edu/, which is an open-source second-order unstructured code for compressible flow. It can handle rotating reference frames and can also do adjoint-based shape optimisation. There is extensive help available at http://www.cfd-online.com/Forums/su2-news-announcements/
I hope this helps.
Regards,
JoNATHAN BULL

On 20 Aug 2013, at 18:31, FazlurR wrote:

> Question #233177 on Fluidity changed:
> https://answers.launchpad.net/fluidity/+question/233177
>
> FazlurR posted a new comment:
> Hello,
>
> I am trying to simulate jet engine compressor at various RPM. Do you
> have any examples that you can point me to?
>
> Thanks in advance.
>
> --
> You received this question notification because you are a member of
> Fluidity Core Team, which is an answer contact for Fluidity.

Thank you everyone for the reply
@ Jon Hill
The problem im trying to solve is, I have a centrifugal compressor which have fix pressure and inlet temperature and I would like to simulate the flow when the compressor is spinning at various rpm and verify the results with hand calculations. Oh btw..sorry to posted here, I noticed you asked if anyone had a problem the like to solve on the thread that is why i posted here.

@jonathan

Thanks for the suggestions, I will look into those link.