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pitzDaily validation

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Old   September 3, 2015, 06:13
Default pitzDaily validation
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Laurent DASTUGUE
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Hello guys and girls,

i am currently using the timeVaryingFixedMappedValue and i would like to be sure of the working of it.
So i have make the pitzDaily testCase run and i have obtained results similar to those written in the ProgrammersGuide (Section 3.2.5).

My question is now the following :
How can i be sure that the results printed in this document are correct ?
Is there anywhere a document which compare those results to experimental ones or to results obtained with another tool ?
Thank you very much.

PS : my question is available for all the test-cases...

Edit : the test-case i have mentioned above (pitzDaily) doesn't involve the timeVaryingFixedMappedValue utility, i know it.
But i wanted to know more about this test-case before to use the test-case involving this utility, which is pitzDailyExptInlet.
Concerning my research about a document where i can find results to validate OpenFOAM ones, i heard about a paper by
Pitz and Daily published in 1983 in the AIAA journal.
Anyone can provide it to me ?

Laurent

Last edited by laurentD; September 4, 2015 at 07:27.
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Old   March 12, 2016, 13:04
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I realise this is quite an old post but I just came across it, so here it is:
A good start would be the Ercoftac backward facing step case http://cfd.mace.manchester.ac.uk/cgi...html&1&0&0&0&0

This also looks promising:
http://ntrs.nasa.gov/archive/nasa/ca...9940028784.pdf

Could also try some of the LES or DNS simulations:
http://journals.cambridge.org/downlo...67b20ce538f628

All the best,

A
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Old   June 4, 2017, 17:45
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For anyone interested with said paper from 1983, you can request it from the author through researchgate, I got it from him within same week.

As for the verification, I based my case exactly to the experimental setup and even further used the same grid resolution, discretization schemes, wall functions and turbulence models with two papers investigating the same setup:

"Application of a Flame-Wrinkling LES Combustion Model to a Turbulent Mixing Layer" by H.G Weller
and
"Large eddy simulation of turbulent premixed combustion flows over backward facing step" by Park and Ko

Although I managed to get the recirculation length and overall mean field similar to the experiments, time averaged mean streamwise velocity is not exactly same with the experiments. It could be very well something I do wrong with the case setup but still wanted to share.

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Old   June 2, 2020, 04:11
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Laurent DASTUGUE
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Blttkgl,
thank you for your answer and for your attached file letting me ton understand which results you have obtained.
I am trying to obtain Weller results with the PitzDaily original testcase but i am further than you.
Can you describe the discretisation schemes you have used ? I would like to stay with the original grid resolution, do you think it is realistic ?
Have a good day
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