[adambarfi]

hi everybody,

I defined a new solver that solve natural convection in a viscoelastic Fluid. it made successfully, but when I want to run my model the following error was appeared:

--> FOAM FATAL ERROR:

     gradientInternalCoeffs cannot be called for a calculatedFvPatchField
     on patch floor of field p in file "/home/mostafa/OpenFOAM/mostafa-2.1.0/run/tutorials/viscoelastic/viscoelasticFluidFoam/Hasan_Giesekus/0/p"
     You are probably trying to solve for a field with a default boundary condition.
     From function calculatedFvPatchField<Type>::gradientInternalCoeffs() const
     in file fields/fvPatchFields/basic/calculated/calculatedFvPatchField.C at line 186.

  FOAM exiting

do anybody know where is the problem?

Thanks

[nimasam]

DEAR mostafa
could you post your p file here?

[adambarfi]

the attachment contains the p, fvSolution and fvSchemes files.
I changed the floor boundary condition and even delete the p file but this problem didn't had been solve. I think the problem is somewhere in the fvSolution or fvSchemes.

[nimasam]

this solver reads p or p-rgh ?
it seems it reads p, if it reads p! then you should define BC for p, you can not use calculated BC, you should use (fixedValue or fixedGradient) for it

[adambarfi]

Originally Posted by nimasam

this solver reads p or p-rgh ?
it seems it reads p, if it reads p! then you should define BC for p, you can not use calculated BC, you should use (fixedValue or fixedGradient) for it

It reads p and calculate the p-rgh, such as bouyantbuossinesqsimplefoam. I change the bc to fixedValue and fixedGradient but this this error didn't had been omit.

[nimasam]

Dear mostafa let me ask another questions, which version of openfoam do you use?
could you run this test case before heat transfer implementation?
put the test case and solver here, then may other can help you

[ata]

Hi
Did you set p equal to another field in your solver during calculations? i.g.
p=....?

[adambarfi]

this is where I use the p in createFields.H:

    Info<< "Calculating field g.h\n" << endl;
    volScalarField gh("gh", g & mesh.C());
    surfaceScalarField ghf("ghf", g & mesh.Cf());

    volScalarField p
    (
        IOobject
        (
            "p",
            runTime.timeName(),
            mesh,
            IOobject::NO_READ,
            IOobject::AUTO_WRITE
        ),
        p_rgh + rhok*gh
    );

    label pRefCell = 0;
    scalar pRefValue = 0.0;
    setRefCell(p,p_rgh, mesh.solutionDict().subDict("PISO"), pRefCell, pRefValue);


    if (p_rgh.needReference())
    {
        p += dimensionedScalar
        (
            "p",
            p.dimensions(),
            pRefValue - getRefCellValue(p, pRefCell)
        );
    }

and in pEqn:

    p = p_rgh + rhok*gh;

    if (p_rgh.needReference())
    {
        p += dimensionedScalar
        (
            "p",
            p.dimensions(),
            pRefValue - getRefCellValue(p, pRefCell)
        );
        p_rgh = p - rhok*gh;
    }

what is wrong in my code?

[ata]

Hi
I think you have two options two solve the problem. Selection is your choice:
1:
volScalarField p ( IOobject ( "p", runTime.timeName(), mesh, IOobject::MUST_READ, IOobject::AUTO_WRITE ), mesh );
or
2:
p == p_rgh + rhok*gh;

[adambarfi]

Dear Ata
I applied what you offered me and what Nima said, that error was solved. but after some iterations (50) the following error appeared:

#0  Foam::error::printStack(Foam::Ostream&) in "/home/mostafa/OpenFOAM/OpenFOAM-2.1.0/platforms/linuxGccDPOpt/lib/libOpenFOAM.so"
#1  Foam::sigFpe::sigHandler(int) in "/home/mostafa/OpenFOAM/OpenFOAM-2.1.0/platforms/linuxGccDPOpt/lib/libOpenFOAM.so"
#2  Uninterpreted: 
#3  Foam::PBiCG::solve(Foam::Field<double>&, Foam::Field<double> const&, unsigned char) const in "/home/mostafa/OpenFOAM/OpenFOAM-2.1.0/platforms/linuxGccDPOpt/lib/libOpenFOAM.so"
#4  Foam::fvMatrix<Foam::SymmTensor<double> >::solve(Foam::dictionary const&) in "/home/mostafa/OpenFOAM/OpenFOAM-2.1.0/platforms/linuxGccDPOpt/lib/libviscoelasticTransportModels.so"
#5  Foam::fvMatrix<Foam::SymmTensor<double> >::solve() in "/home/mostafa/OpenFOAM/OpenFOAM-2.1.0/platforms/linuxGccDPOpt/lib/libviscoelasticTransportModels.so"
#6  Foam::Giesekus::correct() in "/home/mostafa/OpenFOAM/OpenFOAM-2.1.0/platforms/linuxGccDPOpt/lib/libviscoelasticTransportModels.so"
#7  Foam::multiMode::correct() in "/home/mostafa/OpenFOAM/OpenFOAM-2.1.0/platforms/linuxGccDPOpt/lib/libviscoelasticTransportModels.so"
#8  Foam::viscoelasticModel::correct() in "/home/mostafa/OpenFOAM/OpenFOAM-2.1.0/platforms/linuxGccDPOpt/lib/libviscoelasticTransportModels.so"
#9  
 in "/home/mostafa/OpenFOAM/OpenFOAM-2.1.0/platforms/linuxGccDPOpt/bin/BuoyantBoussinesqViscoelasticFluidFoam"
#10  __libc_start_main in "/lib/i386-linux-gnu/libc.so.6"
#11  
 in "/home/mostafa/OpenFOAM/OpenFOAM-2.1.0/platforms/linuxGccDPOpt/bin/BuoyantBoussinesqViscoelasticFluidFoam"
Floating point exception

what is your opinion about this error?

again thank you so much

[nimasam]

it seems somewhere in your code something divide on zero or going to result indefinite value

[Tushar@cfd]

Are you able to resolve your error?

[adambarfi]

Originally Posted by Tushar@cfd

Are you able to resolve your error?

Dear Tushar,
yes, after some day hard working, finally I could solve it.