[ketanganatra0@gmail.com]

Originally Posted by HelioVillanueva

Hi all.

I implemented the Partially-Averaged Navier-Stokes (PANS) methodology in OpenFOAM-3.0.x for the kEpsilon and kOmegaSST turbulence models. I didn't rigorously validate the code, just tested on the pitzDaily tutorial for LES and the results seems to agree well for the mean velocity but with the big advantage in processing time. While the LES tutorial took 1hr and 24 mins, the kEpsilonPANS and kOmegaSSTPANS took aprox 15 mins. Although it's a simple tutorial case, the results are promising. Here is a video comparing the models.

Since the implementation was done using a lot of information available online (credits below), I hope that the validation and improvement of the code could also be done with the community help. For now, there is the need to copy the k and epsilon/omega files in 0 folder and rename to kU and epsilonU/omegaU to run a case. I think it would be nice if don't, but I couldn't manage to initialize the kU and epsilonU/omegaU fields with the NO_READ option in a way that was possible to use the turbulentMixingLenghtFrequencyInlet and turbulentMixingLenghtDissipationRateInlet bcs.

Another thing is the fK value. In the papers some use a constant value or a fK field. The second approach is implemented but it is possible to use a constant fK by specifying a narrow limit in constant/turbulenceProperties. See the case example provided with the code.

Code: here
it should compile just coping the directories to your OF user folder and run the Allmake script.

Hakan Nillson's phd cfd course at Chalmers. Report by Guglielmo Minelli
http://www.tfd.chalmers.se/~hani/kur.../OF_report.pdf

Abdol-Hamid, Girimaji 2005
http://ntrs.nasa.gov/archive/nasa/ca...0050182919.pdf

Lakshmipathy, Girimaji 2006
http://arc.aiaa.org/doi/abs/10.2514/6.2006-119

SUNIL LAKSHMIPATHY PHD Thesis:
http://oaktrust.library.tamu.edu/bit...pdf?sequence=2

About implementing new turbulence models in OF-3.0.x:
http://www.cfd-online.com/Forums/ope...tml#post578372

https://drive.google.com/drive/folde...51?usp=sharing

I have attached the following image for error message.
Could you help me regarding this..???
Please..
Thank you....

[Rakkiran]

Hello Foamers,
I have tried the Allwmake command as explained in terminal after pasting the contents of the clone (find root)folder. But am facing few errors which are shown in the images.

Please guide me through this errors.



Thanks and regards,
Raj Kiran.

[sajjjad]

hi
what your version openfoam? 6 !?
this proram just working for openfoam 3.0.1 and 3 .
Helio Also write pans code for openfoam 4 .
https://github.com/HelioVillanueva/helio-4.x


regards, sajjad

[Rakkiran]

Originally Posted by sajjjad

hi
what your version openfoam? 6 !?
this proram just working for openfoam 3.0.1 and 3 .
Helio Also write pans code for openfoam 4 .
https://github.com/HelioVillanueva/helio-4.x


regards, sajjad

Grateful for the quick response. And yeah am using OF version 6. Is the given code in link compatible with OF 6? ? If not how can use it with my current version.

Thanks and regards,
Raj Kiran.

[sajjjad]

hi Raj Kiran.
I don't know exist pans code for version 6.
you must change code pans for OF6. code OF versions Some changes.
Helio is better able to help you.

regards, sajjad

[ketanganatra0@gmail.com]

Can any one help me regarding the error message mentioned in the image???
the error message appears as "Command not found".

[sajjjad]

hi
you can see this page.
icoFoam: command not found
regards, sajjad

[pedramtx]

Sorry for the late reply. This comment might help people who are using PANS.

PANS absolutely captures the transition point. It all depends on i) your numerical and physical resolutions ii) inflow field iii) imposing right unstable modes! If more help is needed please let me know.

[pedramtx]

Originally Posted by popstar0426

Hi, Helio:

How does PANS methodology solve the laminar-turbulent transition process?

Best regards!
Yue

Sorry for the late reply. This comment might help people who are using PANS.

PANS absolutely captures the transition point. It all depends on i) your numerical and physical resolutions ii) inflow field iii) imposing right unstable modes! If more help is needed please let me know.



Pedram

[Gang Wang]

I think it's an old post but I'd like to know could anyone share the revised code of PANS model for OpenFOAM v1806 or the latest version of OF?

Best,
Gang

[Fuzzy_Wuzzy]

Is there revised code for OoenFOAM v2012? Badly need the PANS code.

[Gang Wang]

Originally Posted by Fuzzy_Wuzzy

Is there revised code for OoenFOAM v2012? Badly need the PANS code.

Hi! I also need the PANS code for the latest OF, did you solve it out?

Best,
Gang

[Fuzzy_Wuzzy]

Originally Posted by Gang Wang

Hi! I also need the PANS code for the latest OF, did you solve it out?

Best,
Gang

Hey! Yes I have made some progress with it. If you can give me your email addres I would be happy to share it.

[Gang Wang]

Originally Posted by Fuzzy_Wuzzy

Hey! Yes I have made some progress with it. If you can give me your email addres I would be happy to share it.

Hi Skanda,

Thank you very much for sharing the code. I mainly use the kOmegaSST-PANS. It's really great to test your code. My Email is wg0632@gmail.com. Let's keep in touch.

Best regards,
Gang

[ckpark]

Originally Posted by Fuzzy_Wuzzy

Hey! Yes I have made some progress with it. If you can give me your email addres I would be happy to share it.

Dear Skanda,
Could you share the code with me as well? It'll be greatly appreciated.
Here is my email: ckdrb247@mail.com
Thanks in advance.
With kind regards,
ck

[hellodd]

Hi, Foamers,

I see that many people here want a PANS turbulence code that running on recent OpenFOAM distributions. Early this year (2021), I managed to compile the PANS code originally written by HelioVillanueva on OpenFOAM-v2012 , the modified PANS code can be found on https://github.com/oseen/PANS_TurbulenceModels.

The code was confirmed to work on OpenFOAM-v2012 and OpenFOAM-v2106.

Best regards,

[ckpark]

Originally Posted by hellodd

Hi, Foamers,

I see that many people here want a PANS turbulence code that running on recent OpenFOAM distributions. Early this year (2021), I managed to compile the PANS code originally written by HelioVillanueva on OpenFOAM-v2012 , the modified PANS code can be found on https://github.com/oseen/PANS_TurbulenceModels.

The code was confirmed to work on OpenFOAM-v2012 and OpenFOAM-v2106.

Best regards,

Thanks dd for your work. I have a query about the initial implementation by HelioVillanueva that you have based your work on.
Is the k-epsilon PANS model based on Maximum Transport (MT) model (Girimaji, 2006)?
Or is it based on the Zero Transport (ZT) model?
The k-epsilon model used by OpenFOAM and HelioVillanueva differ from the classical k-epsilon model used in Girimaji (2006) so I find it hard to trace back Heliovillanueva's derivation.


Thanks in advance!
With kind regards,
ck

[pals123]

Originally Posted by hellodd

Hi, Foamers,

I see that many people here want a PANS turbulence code that running on recent OpenFOAM distributions. Early this year (2021), I managed to compile the PANS code originally written by HelioVillanueva on OpenFOAM-v2012 , the modified PANS code can be found on https://github.com/oseen/PANS_TurbulenceModels.

The code was confirmed to work on OpenFOAM-v2012 and OpenFOAM-v2106.

Best regards,

Hi i tried to compile this code in OpenFOAM-v2012 but getting this error

Traceback (most recent call last):
File "/usr/lib/command-not-found", line 28, in <module>
from CommandNotFound import CommandNotFound
File "/usr/lib/python3/dist-packages/CommandNotFound/CommandNotFound.py", line 19, in <module>
from CommandNotFound.db.db import SqliteDatabase
File "/usr/lib/python3/dist-packages/CommandNotFound/db/db.py", line 5, in <module>
import apt_pkg
ImportError: /opt/OpenFOAM/OpenFOAM-v2012/ThirdParty/platforms/linux64/gcc-6.3.0/lib64/libstdc++.so.6: version `GLIBCXX_3.4.26' not found (required by /lib/x86_64-linux-gnu/libapt-pkg.so.6.0)
pallav@Pallav-ideapad:~/OpenFOAM/pallav-dev/PANS_TurbulenceModels-master/src/TurbulenceModels$

can you help me with directing what's going wrong in my compilation

Best regards
Pallav

[pals123]

Originally Posted by pals123

Hi i tried to compile this code in OpenFOAM-v2012 but getting this error

Traceback (most recent call last):
File "/usr/lib/command-not-found", line 28, in <module>
from CommandNotFound import CommandNotFound
File "/usr/lib/python3/dist-packages/CommandNotFound/CommandNotFound.py", line 19, in <module>
from CommandNotFound.db.db import SqliteDatabase
File "/usr/lib/python3/dist-packages/CommandNotFound/db/db.py", line 5, in <module>
import apt_pkg
ImportError: /opt/OpenFOAM/OpenFOAM-v2012/ThirdParty/platforms/linux64/gcc-6.3.0/lib64/libstdc++.so.6: version `GLIBCXX_3.4.26' not found (required by /lib/x86_64-linux-gnu/libapt-pkg.so.6.0)
pallav@Pallav-ideapad:~/OpenFOAM/pallav-dev/PANS_TurbulenceModels-master/src/TurbulenceModels$

can you help me with directing what's going wrong in my compilation

Best regards
Pallav

this error is fixed and turbulence model is compiled. But i have one further query will this work for caviation simulations?

[vortexrope]

Hi.. I am using your codes. While ke formulation takes the limits for fk as expected, kw does not. could you please help?