CapillaryPressureVanGenuchten.h

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#pragma once
 
#include "MaterialLib/MPL/Property.h"
 
namespace MaterialPropertyLib
{
class Medium;
class Phase;
class Component;
 
class CapillaryPressureVanGenuchten : public Property
{
public:
    CapillaryPressureVanGenuchten(std::string name,
                                  double const residual_liquid_saturation,
                                  double const residual_gas_saturation,
                                  double const exponent,
                                  double const p_b,
                                  double const maximum_capillary_pressure);
 
    void checkScale() const override
    {
        if (!std::holds_alternative<Medium*>(scale_))
        {
            OGS_FATAL(
                "The property 'CapillaryPressureVanGenuchten' is implemented "
                "on the 'media' scale only.");
        }
    }
 
    PropertyDataType value(VariableArray const& variable_array,
                           ParameterLib::SpatialPosition const& pos,
                           double const t,
                           double const dt) const override;
 
    PropertyDataType dValue(VariableArray const& variable_array,
                            Variable const variable,
                            ParameterLib::SpatialPosition const& pos,
                            double const t,
                            double const dt) const override;
 
private:
    double const S_L_res_;    
    double const S_L_max_;    
    double const m_;          
    double const p_b_;        
    double const p_cap_max_;  
};
}  // namespace MaterialPropertyLib