[filo00]

Hi everyone,
this is my first post. I am writing my master thesis in the implementation of a new turbulence model. I have OpenFOAM 12 compiled in my $HOME directory. I have tried to compile an existing turbulence model called myKEpsilon by watching the following YouTube tutorial:

http://www.youtube.com/watch?v=kfshFtULjt4&t=0s

The result is the same of the video. Compiler doesn't give me any error but the compilation failed. In fact, if I type 'myKEpsilon -help' the bash respond with 'command not found'. In addition myKEpsilon folder after the compilation weights only 120 Kb, while the order of magnitude is 2 Mb.

I had already tried to compile the same customize turbulent model with OpenFOAM 10 installed in "opt" directory (instead of $HOME directory).

I really appreciate your help!

Thanks,
Filippo

P.S.
I attached below what I see after the compilation

[Tobermory]

I am not sure what you expected to see when typing 'myKEpsilon -help'. Try it for kEpsilon and you'll get the same result. Remember, you are compiling a turbulence model and not a solver.

Your first check should be whether it has actually generated any output - look in the path at the end of the sceenshot you attached and see if the .so library file has been generated. If it has, then all is okay.

[filo00]

The .so file has been generated and it weights 16 KB. I tried to run a simple test case and I get the following error:

1. Create time
   
2. --> FOAM Warning :
3. From function void* Foam::dlOpen(const Foam::fileName&, bool)
4. in file POSIX.C at line 1247
5. dlopen error : /home/filippo/OpenFOAM/OpenFOAM-12/platforms/linux64GccDPInt32Opt/lib/libphaseCompressibleMomentumTransportModels.so: undefined symbol: _ZTIN4Foam34compressibleMomentumTransportModelE
6. --> FOAM Warning :
7. From function bool Foam::dlLibraryTable:pen(const Foam::fileName&, bool)
8. in file db/dynamicLibrary/dlLibraryTable/dlLibraryTable.C at line 106
9. could not load "libmyKEpsilonMomentumTransportModels.so"
10. Create mesh for time = 0
    
11. Selecting solver incompressibleFluid
12. Selecting viscosity model constant
13. Selecting turbulence model type RAS
14. Selecting RAS turbulence model myKEpsilon
    
    
15. --> FOAM FATAL ERROR:
16. Unknown RASModel type myKEpsilon
    
17. Valid RASModel types:
    
18. 19
19. (
20. LRR
21. LamBremhorstKE
22. LaunderSharmaKE
23. LienCubicKE
24. LienLeschziner
25. RNGkEpsilon
26. SSG
27. ShihQuadraticKE
28. SpalartAllmaras
29. kEpsilon
30. kOmega
31. kOmega2006
32. kOmegaSST
33. kOmegaSSTLM
34. kOmegaSSTSAS
35. kkLOmega
36. qZeta
37. realizableKE
38. v2f
39. )
    
    
40. From function static Foam::autoPtr<Foam::RASModel<BasicMomentumTranspor tModel> > Foam::RASModel<BasicMomentumTransportModel>::New(c onst alphaField&, const rhoField&, const volVectorField&, const surfaceScalarField&, const surfaceScalarField&, const Foam::viscosity&) [with BasicMomentumTransportModel = Foam::incompressibleMomentumTransportModel; Foam::RASModel<BasicMomentumTransportModel>::alpha Field = Foam::geometricOneField; Foam::RASModel<BasicMomentumTransportModel>::rhoFi eld = Foam::geometricOneField; Foam::volVectorField = Foam::GeometricField<Foam::Vector<double>, Foam::fvPatchField, Foam::volMesh>; Foam::surfaceScalarField = Foam::GeometricField<double, Foam::fvsPatchField, Foam::surfaceMesh>]
41. in file ../momentumTransportModels/lnInclude/RASModel.C at line 155.
    
42. FOAM exiting

I modified "momentumTransport" and the "controlDict" as follows:

/*--------------------------------*- C++ -*----------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration | Website: https://openfoam.org
\\ / A nd | Version: 12
\\/ M anipulation |
\*---------------------------------------------------------------------------*/
FoamFile
{
format ascii;
class dictionary;
location "constant";
object momentumTransport;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

simulationType RAS;

RAS
{
model myKEpsilon;

turbulence on;

printCoeffs on;
}

// ************************************************** *********************** //



/*--------------------------------*- C++ -*----------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration | Website: https://openfoam.org
\\ / A nd | Version: 12
\\/ M anipulation |
\*---------------------------------------------------------------------------*/
FoamFile
{
format ascii;
class dictionary;
location "system";
object controlDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

application foamRun;

solver incompressibleFluid;

startFrom latestTime;

startTime 0;

stopAt endTime;

endTime 0.3;

deltaT 0.0001;

writeControl adjustableRunTime;

writeInterval 0.01;

purgeWrite 0;

writeFormat ascii;

writePrecision 6;

writeCompression off;

timeFormat general;

timePrecision 6;

runTimeModifiable yes;

adjustTimeStep yes;

maxCo 5;

libs ("libmyKEpsilonMomentumTransportModels.so");
// ************************************************** *********************** //

[Tobi]

Hi,

First. We do have code tags to make clear text passages.
Second. As already mentioned, you probably compile a library and not an application. Hence typing "myKEpilson" does not make sense at all.
Third: show us your compilation output
Fourth: I did not checked the YouTube video but the lib you want to use was built for OpenFoam V12 or any other version?

Best Tobi

[filo00]

Thanks Tobi!!

I solved the problem by changing some lines in Make/options file. I checked the previous libs and they were built for Open FOAM 12.

It helped me a lot the following article:

https://www.tfd.chalmers.se/~hani/ku...lenceModel.pdf

Thanks all again!!

[einstein_zee]

Hi there,

If you still in doubt what is happening or want to know more this video "https://youtu.be/8QbW8zr8saU" might help.

[filo00]

I will watch your video as soon as possible. Thanks again for your time!!