CFD Online Discussion Forums - janaf dynamic

Hi,

I'm working on fireFoam and I try to implement a new model. For this model, I need to have access to polynomial Janaf coefficients defined in "constant/thermo.compressibleGas".

My solution was to use a dynamic_cast inside my code as follows :

Code:

    // Setup the janaf thermo class

       typedef janafThermo<perfectGas<specie> > janafType;



         typedef sutherlandTransport<sensibleEnthalpy<janafType> > thermoType;



         const multiComponentMixture<thermoType>& myThermo =

         dynamic_cast<const multiComponentMixture<thermoType>&>(this->thermoPtr_());

        

    // O2 thermal enthalpy 

        // Oxygen label

         const label specie_O2 = this->thermoPtr_->composition().species()["O2"];

        // Compute janaf class for O2

         const janafType& myThermo_O2 = dynamic_cast<const janafType&>(myThermo.speciesData()[specie_O2]);

        // Compute molecular thermal enthalpy [J/kmol]               

        scalar H_O2 = myThermo_O2.hs(1e5, Tair_);

        // Compute molecular weight [kg/kmol]

        scalar MW_O2 =  this->thermoPtr_->composition().W(specie_O2);

        // Calculate thermal enthalpy [J/kg]

        scalar hs_O2 = H_O2/MW_O2;

        

        Info << "hs_O2 = " << hs_O2 << endl;

It was working fine in OpenFOAM.2.1 but in OpenFOAM.2.2, I have the following error:
cannot dynamic_cast ... (source type is not polymorphic)

Anyone has a hint how to solve this problem?

Thanks
Sebastien