[alexale]

Hello everyone!
I want implement new Thermo model in OF9.

My action:
1. I take solver: RhoSimpleFoam.
2.I take library : fluidThermophysicalModel (copy and compile in $FOAM_USER_LIBBIN )
3. In my copy of fluidThermophysicalModel i try to make new Thermo class:
- copy existing rhoThermo(rhoThermo.C, rhoThermo.H) with name flameletThermo(rename all rhoThermo on flameletThermo)
- compile this new library fluidThermophysicalModel(with my flameletThermo)
4. In RhoSimpleFoam instead fluidThermo try to use my flameletThermo class

5. I get error:
/usr/bin/ld.bfd: Make/linux64GccDPInt32Debug/rhoSimpleFoamFlamelet.o: in function `main':
/home/alex/OpenFOAM/alex-9/applications/rhoSimpleFoamFlamelet/./createFields.H:13: undefined reference to `Foam::flameletThermo::New(Foam::fvMesh const&, Foam::word const&)'
/usr/bin/ld.bfd: Make/linux64GccDPInt32Debug/rhoSimpleFoamFlamelet.o: in function `main':
/home/alex/OpenFOAM/alex-9/applications/rhoSimpleFoamFlamelet/createFields.H:13: undefined reference to `Foam::flameletThermo::New(Foam::fvMesh const&, Foam::word const&)'
/usr/bin/ld.bfd: Make/linux64GccDPInt32Debug/rhoSimpleFoamFlamelet.o: in function `Foam::autoPtr<Foam::flameletThermo>:perator()() ':
/opt/openfoam9/src/OpenFOAM/lnInclude/autoPtrI.H:142: undefined reference to `typeinfo for Foam::flameletThermo'
collect2: error: ld returned 1 exit status
make: *** [/opt/openfoam9/wmake/makefiles/general:154: /home/alex/OpenFOAM/alex-9/platforms/linux64GccDPInt32Debug/bin/rhoSimpleFoamFlamelet] Error 1


Could anyone give me suggestion related this.

Thank you in advance for any help.

[wangsen992]

Hi Alex, I recently also had this problem and I think i can offer some tips on this. All thermo classes written as templates, so check those source files that ends with "*s.C" (e.g. rhoThermos.C). They contain macros to specialize the thermo class templates with all the sub-modules (e.g. equationOfState, mixture, etc). You need to look at the "makeThermos.C" and "rhoThermos.C" to change accordingly for your class. Also check "thermophysicalModels/specie/include" for all the necessary macro definitions. It quite convoluted and I hope this can help you navigate through the code.

[alexale]

Thank you a lot for help.

I changed all related name in rhoThermos, but it did not help (even more if i change name rhoThermo in all files to some new name i had the same message). It seems that there some new feature in OF9.

I deside change existing rhoThermo for my purpose.
Thank you a lot for advice.


PS: I will try figure out right solution in future (if i find i will post messsage)

[überschwupper]

In my experience the undefined reference error arises when I forgot to update the option file or when defining a function without a definition/implementation.


I would asusme that you either

1. not included your flameletThermo library (-lflameletThermo) in options or
2. only declared the New function without defining it or
3. forgot to include flameletThermoNew.C in your "file"-file


Maybe it helps

[alexale]

Thak you a lot.
You give me right direction. It seems i figure out solution.
I describe my action - may be it help somebody



Task:
I want implement new class like rhoThermo with new property for solver rhoSimpleFoam



My previous wrong way:

1. I try to use in rhoSimpleFoam usual rhoThermo(change fluidThermo to rhoThermo in solver)- it works.

2. I implement flameletThermo In thermopysicalModel/basic ->i copy all stuff related rhoThermo and heRhoThermo rename (to flameletThermo change ...Thermos and so on) and compile to my lfluidThermophysicalModels.
3.In rhoSimpleFoam change fluidThermo to myThermo

4 link my lfluidThermophysicalModels instead standard (add -L$(FOAM_USER_LIBBIN))
5 and get error (see above)
5.I try anothe way - take rhoThermo and change all names in all dir thermopysicalModel/basic on rho1Thermo ->try to use and get error.


You (thank a lot ) give advise use small my own library.

- So I compile only my new flameletThermo (in file option leave only flameletThermo and flameletThermos) to new library flameletLibrary
- link my new library to SimpleFoam - it works


Thank you all friends for all advice.
You give me way to find solution.