thermalconductivityaverage.hh

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#ifndef DUMUX_MATERIAL_THERMALCONDUCTIVITY_AVERAGE_HH
#define DUMUX_MATERIAL_THERMALCONDUCTIVITY_AVERAGE_HH
 
#include <algorithm>
 
namespace Dumux {
 
template<class Scalar>
class ThermalConductivityAverage
{
public:
    template<class VolumeVariables, class SpatialParams, class Element, class FVGeometry>
    [[deprecated("Signature deprecated. Use signature with volume variables only!")]]
    static Scalar effectiveThermalConductivity(const VolumeVariables& volVars,
                                               const SpatialParams& spatialParams,
                                               const Element& element,
                                               const FVGeometry& fvGeometry,
                                               const typename FVGeometry::SubControlVolume& scv)
    {
        return effectiveThermalConductivity(volVars);
    }
 
    template<class VolumeVariables>
    static Scalar effectiveThermalConductivity(const VolumeVariables& volVars)
    {
        constexpr int numFluidPhases = VolumeVariables::numFluidPhases();
 
        // Get the thermal conductivities and the porosity from the volume variables
        Scalar lambdaFluid = 0.0;
        for (int phaseIdx = 0; phaseIdx < numFluidPhases; ++phaseIdx)
            lambdaFluid += volVars.fluidThermalConductivity(phaseIdx)*volVars.saturation(phaseIdx);
 
        const Scalar lambdaSolid = volVars.solidThermalConductivity();
        const Scalar porosity = volVars.porosity();
 
        return lambdaSolid*(1-porosity) + lambdaFluid*porosity;
    }
};
 
} // end namespace Dumux
 
#endif