Detailed Description

This class provides a series of functions to calculate the water vapor properties, including the saturation vapor pressure calculation(Kelvin equation regularized vapor pressure), and corresponding derivatives calculations. The unit of temperature used here are all in Kelvin.

Definition at line 27 of file WaterVaporProperties.h.

#include <WaterVaporProperties.h>

Public Member Functions
	WaterVaporProperties ()=default

double	calculateSaturatedVaporPressure (const double T) const
	water vapor saturation pressure

double	calculateDerivativedPsatdT (const double T) const
	Derivative of SaturatedVaporPressure in terms of T.

double	calculateVaporPressureNonwet (const double pc, const double T, const double mass_density_water) const

double	calculateDerivativedPgwdT (const double pc, const double T, const double mass_density_water) const
	Derivative of partial vapor pressure in terms of T.

double	calculateDerivativedPgwdPC (const double pc, const double T, const double mass_density_water) const
	Derivative of partial vapor pressure in terms of PC.

double	calculatedDensityNonwetdT (const double p_air_nonwet, const double p_vapor_nonwet, const double pc, const double T, const double mass_density_water) const
	Derivative of vapor density in terms of T.

Static Public Member Functions
static double	getWaterVaporEnthalpySimple (const double temperature, const double heat_capacity_water_vapor, const double, const double)
	Specific enthalpy of water vapor.

Private Attributes
const double &	_water_mol_mass = PhysicalConstant::MolarMass::Water

const double &	_air_mol_mass = PhysicalConstant::MolarMass::Air

Constructor & Destructor Documentation

◆ WaterVaporProperties()

MaterialLib::Fluid::WaterVaporProperties::WaterVaporProperties ( )

default

Member Function Documentation

◆ calculatedDensityNonwetdT()

double MaterialLib::Fluid::WaterVaporProperties::calculatedDensityNonwetdT	(	const double	p_air_nonwet,
		const double	p_vapor_nonwet,
		const double	pc,
		const double	T,
		const double	mass_density_water ) const

Derivative of vapor density in terms of T.

Definition at line 68 of file WaterVaporProperties.cpp.

{
    const double dPgwdT = calculateDerivativedPgwdT(pc, T, mass_density_water);
    return -((p_air_nonwet * _air_mol_mass + p_vapor_nonwet * _water_mol_mass) /
             IdealGasConstant / T / T) +
           (_water_mol_mass - _air_mol_mass) * dPgwdT / IdealGasConstant / T;
}

References _air_mol_mass, _water_mol_mass, calculateDerivativedPgwdT(), and MaterialLib::Fluid::T.

◆ calculateDerivativedPgwdPC()

double MaterialLib::Fluid::WaterVaporProperties::calculateDerivativedPgwdPC	(	const double	pc,
		const double	T,
		const double	mass_density_water ) const

Derivative of partial vapor pressure in terms of PC.

Definition at line 60 of file WaterVaporProperties.cpp.

{
    const double c_w = _water_mol_mass / IdealGasConstant / T;
    const double p_sat = calculateSaturatedVaporPressure(T);
    return p_sat * std::exp(-pc * c_w / mass_density_water) *
           (-c_w / mass_density_water);
}

References _water_mol_mass, calculateSaturatedVaporPressure(), and MaterialLib::Fluid::T.

◆ calculateDerivativedPgwdT()

double MaterialLib::Fluid::WaterVaporProperties::calculateDerivativedPgwdT	(	const double	pc,
		const double	T,
		const double	mass_density_water ) const

Derivative of partial vapor pressure in terms of T.

Definition at line 49 of file WaterVaporProperties.cpp.

{
    const double c_w = _water_mol_mass / IdealGasConstant / T;
    const double p_sat = calculateSaturatedVaporPressure(T);
    const double dPsatdT = calculateDerivativedPsatdT(T);
    return dPsatdT * std::exp(-pc * c_w / mass_density_water) +
           p_sat * std::exp(-pc * c_w / mass_density_water) *
               (pc * _water_mol_mass / mass_density_water / IdealGasConstant /
                T / T);
}

References _water_mol_mass, calculateDerivativedPsatdT(), calculateSaturatedVaporPressure(), and MaterialLib::Fluid::T.

Referenced by calculatedDensityNonwetdT().

◆ calculateDerivativedPsatdT()

double MaterialLib::Fluid::WaterVaporProperties::calculateDerivativedPsatdT ( const double T ) const

Derivative of SaturatedVaporPressure in terms of T.

Definition at line 35 of file WaterVaporProperties.cpp.

{
    return p_0 * (_water_mol_mass * h_wg / IdealGasConstant) * (1. / T / T) *
           std::exp(((1. / temperature_0) - (1. / T)) * _water_mol_mass * h_wg /
                    IdealGasConstant);
}

References _water_mol_mass, MaterialLib::Fluid::h_wg, MaterialLib::Fluid::p_0, MaterialLib::Fluid::T, and MaterialLib::Fluid::temperature_0.

Referenced by calculateDerivativedPgwdT().

◆ calculateSaturatedVaporPressure()

double MaterialLib::Fluid::WaterVaporProperties::calculateSaturatedVaporPressure ( const double T ) const

water vapor saturation pressure

latent heat of water evaporation

Definition at line 28 of file WaterVaporProperties.cpp.

{
    return p_0 * std::exp(((1 / temperature_0) - (1 / T)) * _water_mol_mass *
                          h_wg / IdealGasConstant);
}

References _water_mol_mass, MaterialLib::Fluid::h_wg, MaterialLib::Fluid::p_0, MaterialLib::Fluid::T, and MaterialLib::Fluid::temperature_0.

Referenced by calculateDerivativedPgwdPC(), calculateDerivativedPgwdT(), and calculateVaporPressureNonwet().

◆ calculateVaporPressureNonwet()

double MaterialLib::Fluid::WaterVaporProperties::calculateVaporPressureNonwet	(	const double	pc,
		const double	T,
		const double	mass_density_water ) const

partial water vapor pressure in nonwetting phase Kelvin equation

Parameters

pc	capillary pressure
T	temperature
mass_density_water	mass density of water

Definition at line 42 of file WaterVaporProperties.cpp.

{
    const double p_sat = calculateSaturatedVaporPressure(T);
    const double c_w = _water_mol_mass / IdealGasConstant / T;
    return p_sat * std::exp(-pc * c_w / mass_density_water);
}

References _water_mol_mass, calculateSaturatedVaporPressure(), and MaterialLib::Fluid::T.

◆ getWaterVaporEnthalpySimple()

double MaterialLib::Fluid::WaterVaporProperties::getWaterVaporEnthalpySimple	(	const double	temperature,
		const double	heat_capacity_water_vapor,
		const double	,
		const double	)

static

Specific enthalpy of water vapor.

Definition at line 77 of file WaterVaporProperties.cpp.

{
    return heat_capacity_water_vapor * (temperature - CelsiusZeroInKelvin) +
           h_wg;
}

References MaterialLib::Fluid::h_wg.

Member Data Documentation

◆ _air_mol_mass

const double& MaterialLib::Fluid::WaterVaporProperties::_air_mol_mass = PhysicalConstant::MolarMass::Air

private

Definition at line 62 of file WaterVaporProperties.h.

Referenced by calculatedDensityNonwetdT().

◆ _water_mol_mass

const double& MaterialLib::Fluid::WaterVaporProperties::_water_mol_mass = PhysicalConstant::MolarMass::Water