Pure species representation of heptane. More...

#include <Heptane.h>

Inheritance diagram for Heptane:

Detailed Description

Pure species representation of heptane.

Values and functions are from Reynolds [35].

Definition at line 15 of file Heptane.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
	Pressure. Equation P-2 in Reynolds.

double	up () override
	Internal energy.

double	sp () override
	Entropy. See Reynolds eqn (16) section 2.

double	Psat () override
	Pressure at Saturation. Equation S-2 in Reynolds.

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.

Private Member Functions
double	ldens () override
	liquid density. Equation D2 in Reynolds.

double	C (int jm, double, double, double, double)
	C returns a multiplier in each term of the sum in P-2, used in conjunction with C in the function Pp.

double	Cprime (int i, double, double, double)
	derivative of C(i)

double	I (int i, double, double)
	I = integral from o-rho { 1/(rho^2) * H(i, rho) d rho } ( see section 2 of Reynolds TPSI )

double	H (int i, double egrho)
	H returns a multiplier in each term of the sum in P-2.

Additional Inherited Members
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.

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

◆ Heptane()

Heptane ( )

inline

Definition at line 18 of file Heptane.h.

Member Function Documentation

◆ MolWt()

double MolWt ( )

overridevirtual

Molecular weight [kg/kmol].

Implements Substance.

Definition at line 258 of file Heptane.cpp.

◆ Tcrit()

double Tcrit ( )

overridevirtual

Critical temperature [K].

Implements Substance.

Definition at line 238 of file Heptane.cpp.

◆ Pcrit()

double Pcrit ( )

overridevirtual

Critical pressure [Pa].

Implements Substance.

Definition at line 242 of file Heptane.cpp.

◆ Vcrit()

double Vcrit ( )

overridevirtual

Critical specific volume [m^3/kg].

Implements Substance.

Definition at line 246 of file Heptane.cpp.

◆ Tmin()

double Tmin ( )

overridevirtual

Minimum temperature for which the equation of state is valid.

Implements Substance.

Definition at line 250 of file Heptane.cpp.

◆ Tmax()

double Tmax ( )

overridevirtual

Maximum temperature for which the equation of state is valid.

Implements Substance.

Definition at line 254 of file Heptane.cpp.

◆ Pp()

double Pp ( )

overridevirtual

Pressure. Equation P-2 in Reynolds.

Implements Substance.

Definition at line 191 of file Heptane.cpp.

◆ up()

double up ( )

overridevirtual

Internal energy.

See Reynolds eqn (15) section 2 u = (the integral from T to To of co(T)dT) + sum from i to N ([C(i) - T*Cprime(i)] + uo

Implements Substance.

Definition at line 150 of file Heptane.cpp.

◆ sp()

double sp ( )

overridevirtual

Entropy. See Reynolds eqn (16) section 2.

Implements Substance.

Definition at line 171 of file Heptane.cpp.

◆ Psat()

double Psat ( )

overridevirtual

Pressure at Saturation. Equation S-2 in Reynolds.

Implements Substance.

Definition at line 206 of file Heptane.cpp.

◆ ldens()

double ldens ( )

overrideprivatevirtual

liquid density. Equation D2 in Reynolds.

Implements Substance.

Definition at line 221 of file Heptane.cpp.

◆ C()

double C	(	int	jm,
		double	Tinverse,
		double	T2inverse,
		double	T3inverse,
		double	T4inverse
	)

private

C returns a multiplier in each term of the sum in P-2, used in conjunction with C in the function Pp.

j is used to represent which of the values in the summation to calculate
j=0 is the second additive in the formula in reynolds
j=1 is the third...

Definition at line 79 of file Heptane.cpp.

◆ Cprime()

double Cprime	(	int	i,
		double	T2inverse,
		double	T3inverse,
		double	T4inverse
	)

private

derivative of C(i)

Definition at line 101 of file Heptane.cpp.

◆ I()

double I	(	int	i,
		double	ergho,
		double	Gamma
	)

private

I = integral from o-rho { 1/(rho^2) * H(i, rho) d rho } ( see section 2 of Reynolds TPSI )

Definition at line 121 of file Heptane.cpp.

◆ H()

double H	(	int	i,
		double	egrho
	)

private

H returns a multiplier in each term of the sum in P-2.

this is used in conjunction with C in the function Pp this represents the product rho^n

i=0 is the second additive in the formula in reynolds
i=1 is the third ...

Definition at line 137 of file Heptane.cpp.

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

Detailed Description

Public Member Functions

Private Member Functions

Additional Inherited Members

Constructor & Destructor Documentation

◆ Heptane()

Member Function Documentation

◆ MolWt()

◆ Tcrit()

◆ Pcrit()

◆ Vcrit()

◆ Tmin()

◆ Tmax()

◆ Pp()

◆ up()

◆ sp()

◆ Psat()

◆ ldens()

◆ C()

◆ Cprime()

◆ I()

◆ H()