hydrogen Class Reference

Pure species representation of hydrogen. More...

#include <Hydrogen.h>

Inheritance diagram for hydrogen:

Detailed Description

Pure species representation of hydrogen.

Values and functions are from Reynolds [38].

Definition at line 16 of file Hydrogen.h.

Public Member Functions
double	MolWt () override
	Molecular weight [kg/kmol].
double	Tcrit () override
	Critical temperature [K].
double	Pcrit () override
	Critical pressure [Pa].
double	Vcrit () override
	Critical specific volume [m^3/kg].
double	Tmin () override
	Minimum temperature for which the equation of state is valid.
double	Tmax () override
	Maximum temperature for which the equation of state is valid.
double	Pp () override
double	up () override
	Internal energy of a single-phase state.
double	sp () override
	Entropy of a single-phase state.
double	Psat () override
	Saturation pressure. Equation s3 in Reynolds TPSI.
Public Member Functions inherited from Substance
void	setStdState (double h0=0.0, double s0=0.0, double t0=298.15, double p0=1.01325e5)
virtual double	Pp ()=0
double	hp ()
	Enthalpy of a single-phase state.
double	gp ()
	Gibbs function of a single-phase state.
double	prop (propertyFlag::type ijob)
void	set_TPp (double t0, double p0)
	set T and P
void	Set (PropertyPair::type XY, double x0, double y0)
	Function to set or change the state for a property pair XY where x0 is the value of first property and y0 is the value of the second property.
const char *	name ()
	Name of the substance.
const char *	formula ()
	Chemical formula for the substance.
double	P ()
	Pressure [Pa].
double	Temp ()
	Temperature [K].
double	v ()
	Specific volume [m^3/kg].
double	u ()
	Internal energy [J/kg].
double	h ()
	Enthalpy [J/kg].
double	s ()
	Entropy [J/kg/K].
double	f ()
	Helmholtz function [J/kg].
double	g ()
	Gibbs function [J/kg].
virtual double	cv ()
	Specific heat at constant volume [J/kg/K].
virtual double	cp ()
	Specific heat at constant pressure [J/kg/K].
virtual double	thermalExpansionCoeff ()
virtual double	isothermalCompressibility ()
double	Ps ()
virtual double	dPsdT ()
	The derivative of the saturation pressure with respect to temperature.
double	Tsat (double p)
	Saturation temperature at pressure p.
double	x ()
	Vapor mass fraction.
int	TwoPhase (bool strict=false)
	Returns 1 if the current state is a liquid/vapor mixture, 0 otherwise.

Protected Member Functions
double	ldens () override
	Liquid density. Equation D4 in Reynolds TPSI.
Protected Member Functions inherited from Substance
virtual double	ldens ()=0
virtual double	Psat ()=0
	Saturation pressure, Pa.
virtual double	up ()=0
	Internal energy of a single-phase state.
virtual double	sp ()=0
	Entropy of a single-phase state.
virtual int	ideal ()
double	vp ()
int	Lever (int itp, double sat, double val, propertyFlag::type ifunc)
	Uses the lever rule to set state in the dome.
void	update_sat ()
	Update saturated liquid and vapor densities and saturation pressure.

Private Member Functions
double	C (int i, double rt, double rt2)
double	Cprime (int i, double rt, double rt2, double rt3)
double	I (int i, double egrho)
double	H (int i, double egrho)
double	W (int i, double egrho)
double	icv (int i, double x, double xlg)

Additional Inherited Members
Protected Attributes inherited from Substance
double	T = Undef
double	Rho = Undef
double	Tslast = Undef
double	Rhf = Undef
double	Rhv = Undef
double	Pst = Undef
double	m_energy_offset = 0.0
double	m_entropy_offset = 0.0
std::string	m_name
std::string	m_formula

Constructor & Destructor Documentation

hydrogen()

hydrogen ( )

inline

Definition at line 19 of file Hydrogen.h.

Member Function Documentation

MolWt()

double MolWt ( )

overridevirtual

Molecular weight [kg/kmol].

Implements Substance.

Definition at line 268 of file Hydrogen.cpp.

Tcrit()

double Tcrit ( )

overridevirtual

Critical temperature [K].

Implements Substance.

Definition at line 248 of file Hydrogen.cpp.

Pcrit()

double Pcrit ( )

overridevirtual

Critical pressure [Pa].

Implements Substance.

Definition at line 252 of file Hydrogen.cpp.

Vcrit()

double Vcrit ( )

overridevirtual

Critical specific volume [m^3/kg].

Implements Substance.

Definition at line 256 of file Hydrogen.cpp.

Tmin()

double Tmin ( )

overridevirtual

Minimum temperature for which the equation of state is valid.

Implements Substance.

Definition at line 260 of file Hydrogen.cpp.

Tmax()

double Tmax ( )

overridevirtual

Maximum temperature for which the equation of state is valid.

Implements Substance.

Definition at line 264 of file Hydrogen.cpp.

Pp()

double Pp ( )

overridevirtual

Implements Substance.

Definition at line 207 of file Hydrogen.cpp.

up()

double up ( )

overridevirtual

Internal energy of a single-phase state.

Implements Substance.

Definition at line 151 of file Hydrogen.cpp.

sp()

double sp ( )

overridevirtual

Entropy of a single-phase state.

Implements Substance.

Definition at line 179 of file Hydrogen.cpp.

Psat()

double Psat ( )

overridevirtual

Saturation pressure. Equation s3 in Reynolds TPSI.

Implements Substance.

Definition at line 235 of file Hydrogen.cpp.

ldens()

double ldens ( )

overrideprotectedvirtual

Liquid density. Equation D4 in Reynolds TPSI.

Implements Substance.

Definition at line 220 of file Hydrogen.cpp.

C()

double C ( int  i, double  rt, double  rt2  )

private

Definition at line 58 of file Hydrogen.cpp.

Cprime()

double Cprime ( int  i, double  rt, double  rt2, double  rt3  )

private

Definition at line 94 of file Hydrogen.cpp.

I()

double I ( int  i, double  egrho  )

private

Definition at line 141 of file Hydrogen.cpp.

H()

double H ( int  i, double  egrho  )

private

Definition at line 136 of file Hydrogen.cpp.

W()

double W ( int  i, double  egrho  )

private

Definition at line 130 of file Hydrogen.cpp.

icv()

double icv ( int  i, double  x, double  xlg  )

private

Definition at line 146 of file Hydrogen.cpp.

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The documentation for this class was generated from the following files:

• Hydrogen.h
• Hydrogen.cpp