[pupo]

Hello Foamers

I'm trying to figure out how does openFoam calculate the thermal diffusivity in BuyoantSimpleFoam. So far all the answers I've found online only go as deep as saying that alpha = nu / prandtl, but how is Prandtl calculated?

In other words, how does OpenFoam goes from a Pressure Field, Temperature Field and the properties listed below to alphaEff?

thermoType
{
    type            heRhoThermo;
    mixture         pureMixture;
    transport       sutherland;
    thermo          hConst;
    equationOfState perfectGas;
    specie          specie;
    energy          sensibleEnthalpy;
}

pRef            101325;

mixture
{
    specie
    {
        nMoles          1;
        molWeight       28.96;
    }
    thermodynamics
    {
        Cp              1006;
        Hf              0;
    }
    transport
    {
        As           1.458e-06; 
        Ts           110.555; 
    }
}

Best Regards