WaterVapourEnthalpyIAPWSIF97Region4.cpp

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#include "WaterVapourEnthalpyIAPWSIF97Region4.h"
 
#include <cmath>
 
#include "BaseLib/Error.h"
#include "MaterialLib/Fluid/GibbsFreeEnergy/DimensionlessGibbsFreeEnergyRegion2.h"
#include "MaterialLib/MPL/Properties/WaterSaturationCurveIAPWSIF97Region4.h"
#include "MaterialLib/PhysicalConstant.h"
 
namespace MaterialPropertyLib
{
PropertyDataType WaterVapourEnthalpyIAPWSIF97Region4::value(
    VariableArray const& variable_array,
    ParameterLib::SpatialPosition const& /*pos*/, double const /*t*/,
    double const /*dt*/) const
{
    double const p = variable_array.liquid_phase_pressure;
 
    if ((p < 611.213) || (p > 22.064e6))
    {
        WARN(
            "Pressure is out of the range for the water vapour saturation "
            "enthalpy.");
    }
 
    static constexpr double ref_T_ = 540;   
    static constexpr double ref_p_ = 1.e6;  
 
    double const T_s = IAPWSIF97Region4::waterSaturationTemperature(p);
    double const tau = ref_T_ / T_s;
    double const pi = p / ref_p_;
 
    double dgamma_dtau =
        MaterialLib::Fluid::DimensionlessGibbsFreeEnergyRegion2::getdGammadTau(
            tau, pi);
 
    return tau *
           MaterialLib::PhysicalConstant::SpecificGasConstant::WaterVapour *
           T_s * dgamma_dtau;
}
 
PropertyDataType WaterVapourEnthalpyIAPWSIF97Region4::dValue(
    VariableArray const& /*variable_array*/, Variable const /*variable*/,
    ParameterLib::SpatialPosition const& /*pos*/, double const /*t*/,
    double const /*dt*/) const
{
    OGS_FATAL(
        "WaterVapourEnthalpyIAPWSIF97Region4::dValue is not implemented.");
}
 
}  // namespace MaterialPropertyLib