CFD Online Discussion Forums - access boundary field from inside BC

Hi all!

I implemented a radiation model in the chtMultiRegionFoam solver. Now I have to modify the solidWallMixedTemperature BC (solvers/heatTransfer/chtMultiRegionFoam/derivedFvPatchFields/solidWallMixedTemperatureCoupled) to account for radiation at the fluid_solid interface. There I need the total radiative heat flux Qr at the wall, calculated by the radiation model (here fvDOM). I tried:

Code:

scalarField Qrad;



if (findIndex(props.fluidRegionNames(), myRegion.name()) != -1)

    {

        Qrad = this->patch().lookupPatchField<volScalarField, scalar>(Qr);

    }

The code compiles, and when I run the solver I get the following error:

Code:

--> FOAM FATAL ERROR: 



    request for volScalarField  from objectRegistry air failed

    available objects of type volScalarField are



27

(

aLambda_0

a

ILambda_0_0

psi

DpDt

K

Qr0

h

I1

E

rho

Qr1

Cp

psi_0

G

ILambda_1_0

alpha

rho_0

p

T

Qr

I0

pow3(T)

p_0

e

bLambda_0

mu

)





    From function objectRegistry::lookupObject<Type>(const word&) const

    in file /home/aa/OpenFOAM/OpenFOAM-1.6.x/src/OpenFOAM/lnInclude/objectRegistryTemplates.C at line 140.



FOAM aborting



#0  Foam::error::printStack(Foam::Ostream&) in "/home/aa/OpenFOAM/OpenFOAM-1.6.x/lib/linux64GccDPOpt/libOpenFOAM.so"

#1  Foam::error::abort() in "/home/aa/OpenFOAM/OpenFOAM-1.6.x/lib/linux64GccDPOpt/libOpenFOAM.so"

#2  Foam::Ostream& Foam::operator<< <Foam::error>(Foam::Ostream&, Foam::errorManip<Foam::error>) in "/home/aa/OpenFOAM/aa-1.6.x/applications/bin/linux64GccDPOpt/chtMultiRegionRadFoam"

#3  Foam::GeometricField<double, Foam::fvPatchField, Foam::volMesh> const& Foam::objectRegistry::lookupObject<Foam::GeometricField<double, Foam::fvPatchField, Foam::volMesh> >(Foam::word const&) const in "/home/aa/OpenFOAM/aa-1.6.x/applications/bin/linux64GccDPOpt/chtMultiRegionRadFoam"

#4  Foam::solidWallMixedTemperatureCoupledFvPatchScalarField::updateCoeffs() in "/home/aa/OpenFOAM/aa-1.6.x/applications/bin/linux64GccDPOpt/chtMultiRegionRadFoam"

#5  Foam::mixedFvPatchField<double>::evaluate(Foam::Pstream::commsTypes) in "/home/aa/OpenFOAM/aa-1.6.x/applications/bin/linux64GccDPOpt/chtMultiRegionRadFoam"

#6  Foam::mixedEnthalpyFvPatchScalarField::updateCoeffs() in "/home/aa/OpenFOAM/OpenFOAM-1.6.x/lib/linux64GccDPOpt/libbasicThermophysicalModels.so"

#7  Foam::fvMatrix<double>::fvMatrix(Foam::GeometricField<double, Foam::fvPatchField, Foam::volMesh>&, Foam::dimensionSet const&) in "/home/aa/OpenFOAM/OpenFOAM-1.6.x/lib/linux64GccDPOpt/libradiation.so"

#8  Foam::tmp<Foam::fvMatrix<double> > Foam::fvm::Sp<double>(Foam::DimensionedField<double, Foam::volMesh> const&, Foam::GeometricField<double, Foam::fvPatchField, Foam::volMesh>&) in "/home/aa/OpenFOAM/OpenFOAM-1.6.x/lib/linux64GccDPOpt/libradiation.so"

#9  Foam::radiation::radiationModel::Sh(Foam::basicThermo&) const in "/home/aa/OpenFOAM/OpenFOAM-1.6.x/lib/linux64GccDPOpt/libradiation.so"

#10  main in "/home/aa/OpenFOAM/aa-1.6.x/applications/bin/linux64GccDPOpt/chtMultiRegionRadFoam"

#11  __libc_start_main in "/lib/libc.so.6"

#12  _start at /build/buildd/glibc-2.9/csu/../sysdeps/x86_64/elf/start.S:116

I don t know why the request failed as the field I d like to access is mentioned in the list of the available objects.

Can somebody give me a hint on how to get Qr at the considered boundary??

Thx in advance,
Aram