freeflow/navierstokes/energy/volumevariables.hh

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#ifndef DUMUX_FREEFLOW_NAVIER_STOKES_ENERGY_VOLUME_VARIABLES_HH
#define DUMUX_FREEFLOW_NAVIER_STOKES_ENERGY_VOLUME_VARIABLES_HH
 
#include <type_traits>
#include <dune/common/std/type_traits.hh>
 
 
namespace Dumux {
 
namespace Detail {
 
struct EmptyFreeFlowHeatCondType {};
 
template<bool enableEnergyBalance, class Traits>
struct FreeFlowHeatCondType
{
    using type = EmptyFreeFlowHeatCondType;
};
 
template<class Traits>
struct FreeFlowHeatCondType<true, Traits>
{
    using type = typename Traits::HeatConductionType;
};
 
} // end namespace Detail
 
template<class Traits, class Impl>
class NavierStokesEnergyVolumeVariables
{
    using Scalar = typename Traits::PrimaryVariables::value_type;
    static constexpr bool enableEnergyBalance = Traits::ModelTraits::enableEnergyBalance();
 
public:
    using FluidState = typename Traits::FluidState;
    using FluidSystem = typename Traits::FluidSystem;
    using HeatConductionType = typename Detail::FreeFlowHeatCondType<enableEnergyBalance, Traits>::type;
 
    template<class ElementSolution, class Problem, class Element, class SubControlVolume>
    Scalar getTemperature(const ElementSolution& elemSol,
                          const Problem& problem,
                          const Element& element,
                          const SubControlVolume& scv) const
    {
        if constexpr (enableEnergyBalance)
            return elemSol[scv.localDofIndex()][Traits::ModelTraits::Indices::temperatureIdx];
        else
            return problem.spatialParams().temperature(element, scv, elemSol);
    }
 
 
    void updateEffectiveThermalConductivity()
    {
        if constexpr (enableEnergyBalance)
            lambdaEff_ = Traits::EffectiveThermalConductivityModel::effectiveThermalConductivity(asImp_());
    }
 
    Scalar internalEnergy(const int phaseIdx = 0) const
    {
        if constexpr (enableEnergyBalance)
            return asImp_().fluidState().internalEnergy(0);
        else
            return 0.0;
    }
 
    Scalar enthalpy(const int phaseIdx = 0) const
    {
        if constexpr (enableEnergyBalance)
            return asImp_().fluidState().enthalpy(0);
        else
            return 0.0;
    }
 
    Scalar temperatureFluid(const int phaseIdx = 0) const
    { return asImp_().fluidState().temperature(0); }
 
 
    Scalar fluidThermalConductivity(const int phaseIdx = 0) const
    { return FluidSystem::thermalConductivity(asImp_().fluidState(), 0); }
 
    Scalar effectiveThermalConductivity(const int phaseIdx = 0) const
    { return lambdaEff_; }
 
 
    template<class ParameterCache>
    static Scalar enthalpy(const FluidState& fluidState,
                           const ParameterCache& paramCache)
    {
        if constexpr (enableEnergyBalance)
            return FluidSystem::enthalpy(fluidState, paramCache, 0);
        else
            return 0.0;
    }
 
protected:
    Scalar lambdaEff_;
    const Impl &asImp_() const { return *static_cast<const Impl*>(this); }
    Impl &asImp_() { return *static_cast<Impl*>(this); }
};
 
} // end namespace Dumux
 
#endif