A constant-heat capacity species thermodynamic property manager class. More...

#include <ConstCpPoly.h>

Inheritance diagram for ConstCpPoly:

Collaboration diagram for ConstCpPoly:

Public Member Functions
	ConstCpPoly ()
	empty constructor

	ConstCpPoly (size_t n, doublereal tlow, doublereal thigh, doublereal pref, const doublereal *coeffs)
	Constructor used in templated instantiations.

	ConstCpPoly (const ConstCpPoly &)
	copy constructor

ConstCpPoly &	operator= (const ConstCpPoly &)
	Assignment operator.

virtual	~ConstCpPoly ()
	Destructor.

virtual SpeciesThermoInterpType *	duplMyselfAsSpeciesThermoInterpType () const
	Duplicator.

doublereal	minTemp () const
	Returns the minimum temperature that the thermo parameterization is valid.

doublereal	maxTemp () const
	Returns the maximum temperature that the thermo parameterization is valid.

doublereal	refPressure () const
	Returns the reference pressure (Pa)

virtual int	reportType () const
	Returns an integer representing the type of parameterization.

virtual size_t	speciesIndex () const
	Returns an integer representing the species index.

void	updateProperties (const doublereal tt, doublereal cp_R, doublereal h_RT, doublereal s_R) const
	Update the properties for this species, given a temperature polynomial.

void	updatePropertiesTemp (const doublereal temp, doublereal cp_R, doublereal h_RT, doublereal *s_R) const
	Compute the reference-state property of one species.

void	reportParameters (size_t &n, int &type, doublereal &tlow, doublereal &thigh, doublereal &pref, doublereal *const coeffs) const
	This utility function reports back the type of parameterization and all of the parameters for the species, index.

virtual void	modifyParameters (doublereal *coeffs)
	Modify parameters for the standard state.

Protected Attributes
doublereal	m_t0
	Base temperature.

doublereal	m_cp0_R
	Dimensionless value of the heat capacity.

doublereal	m_h0_R
	dimensionless value of the enthaply at t0

doublereal	m_s0_R
	Dimensionless value of the entropy at t0.

doublereal	m_logt0
	log of the t0 value

doublereal	m_lowT
	Minimum temperature for which the parameterization is valid (Kelvin)

doublereal	m_highT
	Maximum temperature for which the parameterization is valid (Kelvin)

doublereal	m_Pref
	Reference pressure (Pa)

size_t	m_index
	Species Index.

Detailed Description

A constant-heat capacity species thermodynamic property manager class.

This makes the assumption that the heat capacity is a constant. Then, the following relations are used to complete the specification of the thermodynamic functions for the species.

\[ \frac{c_p(T)}{R} = Cp0\_R \]

\[ \frac{h^0(T)}{RT} = \frac{1}{T} * (h0\_R + (T - T_0) * Cp0\_R) \]

\[ \frac{s^0(T)}{R} = (s0\_R + (log(T) - log(T_0)) * Cp0\_R) \]

This parameterization takes 4 input values. These are:

c[0] = \( T_0 \)(Kelvin)
c[1] = \( H_k^o(T_0, p_{ref}) \) (J/kmol)
c[2] = \( S_k^o(T_0, p_{ref}) \) (J/kmol K)
c[3] = \( {Cp}_k^o(T_0, p_{ref}) \) (J(kmol K)

The multispecies SimpleThermo class makes the same assumptions as this class does.

See Also: SimpleThermo

Definition at line 48 of file ConstCpPoly.h.

Constructor & Destructor Documentation

ConstCpPoly ( )

empty constructor

Definition at line 18 of file ConstCpPoly.cpp.

Referenced by ConstCpPoly::duplMyselfAsSpeciesThermoInterpType().

ConstCpPoly	(	size_t	n,
		doublereal	tlow,
		doublereal	thigh,
		doublereal	pref,
		const doublereal *	coeffs
	)

Constructor used in templated instantiations.

Parameters

n	Species index
tlow	Minimum temperature
thigh	Maximum temperature
pref	reference pressure (Pa).
coeffs	Vector of coefficients used to set the parameters for the standard state for species n. There are 4 coefficients for the ConstCpPoly parameterization. c[0] = \( T_0 \)(Kelvin) c[1] = \( H_k^o(T_0, p_{ref}) \) (J/kmol) c[2] = \( S_k^o(T_0, p_{ref}) \) (J/kmol K) c[3] = \( {Cp}_k^o(T_0, p_{ref}) \) (J(kmol K)

Definition at line 31 of file ConstCpPoly.cpp.

References Cantera::GasConstant, ConstCpPoly::m_cp0_R, ConstCpPoly::m_h0_R, ConstCpPoly::m_logt0, ConstCpPoly::m_s0_R, and ConstCpPoly::m_t0.

ConstCpPoly ( const ConstCpPoly & b )

copy constructor

Definition at line 46 of file ConstCpPoly.cpp.

~ConstCpPoly ( )

virtual

Destructor.

Definition at line 75 of file ConstCpPoly.cpp.

Member Function Documentation

ConstCpPoly & operator= ( const ConstCpPoly & b )

Assignment operator.

Definition at line 59 of file ConstCpPoly.cpp.

References ConstCpPoly::m_cp0_R, ConstCpPoly::m_h0_R, ConstCpPoly::m_highT, ConstCpPoly::m_index, ConstCpPoly::m_logt0, ConstCpPoly::m_lowT, ConstCpPoly::m_Pref, ConstCpPoly::m_s0_R, and ConstCpPoly::m_t0.

SpeciesThermoInterpType * duplMyselfAsSpeciesThermoInterpType ( ) const

virtual

Duplicator.

Implements SpeciesThermoInterpType.

Definition at line 78 of file ConstCpPoly.cpp.

References ConstCpPoly::ConstCpPoly().

doublereal minTemp ( ) const

virtual

Returns the minimum temperature that the thermo parameterization is valid.

Implements SpeciesThermoInterpType.

Definition at line 84 of file ConstCpPoly.cpp.

References ConstCpPoly::m_lowT.

doublereal maxTemp ( ) const

virtual

Returns the maximum temperature that the thermo parameterization is valid.

Implements SpeciesThermoInterpType.

Definition at line 88 of file ConstCpPoly.cpp.

References ConstCpPoly::m_highT.

doublereal refPressure ( ) const

virtual

Returns the reference pressure (Pa)

Implements SpeciesThermoInterpType.

Definition at line 92 of file ConstCpPoly.cpp.

References ConstCpPoly::m_Pref.

virtual int reportType ( ) const

inlinevirtual

Returns an integer representing the type of parameterization.

Implements SpeciesThermoInterpType.

Definition at line 99 of file ConstCpPoly.h.

References CONSTANT_CP.

virtual size_t speciesIndex ( ) const

inlinevirtual

Returns an integer representing the species index.

Implements SpeciesThermoInterpType.

Definition at line 104 of file ConstCpPoly.h.

References ConstCpPoly::m_index.

void updateProperties	(	const doublereal *	tt,
		doublereal *	cp_R,
		doublereal *	h_RT,
		doublereal *	s_R
	)		const

virtual

Update the properties for this species, given a temperature polynomial.

This method is called with a pointer to an array containing the functions of temperature needed by this parameterization, and three pointers to arrays where the computed property values should be written. This method updates only one value in each array.

Form and Length of the temperature polynomial:

m_t[0] = tt;

Parameters

tt	Vector of temperature polynomials
cp_R	Vector of Dimensionless heat capacities. (length m_kk).
h_RT	Vector of Dimensionless enthalpies. (length m_kk).
s_R	Vector of Dimensionless entropies. (length m_kk).

Reimplemented from SpeciesThermoInterpType.

Definition at line 97 of file ConstCpPoly.cpp.

References ConstCpPoly::m_cp0_R, ConstCpPoly::m_h0_R, ConstCpPoly::m_index, ConstCpPoly::m_logt0, ConstCpPoly::m_s0_R, and ConstCpPoly::m_t0.

void updatePropertiesTemp	(	const doublereal	temp,
		doublereal *	cp_R,
		doublereal *	h_RT,
		doublereal *	s_R
	)		const

virtual

Compute the reference-state property of one species.

Given temperature T in K, this method updates the values of the non-dimensional heat capacity at constant pressure, enthalpy, and entropy, at the reference pressure, Pref of one of the species. The species index is used to reference into the cp_R, h_RT, and s_R arrays.

Parameters

temp	Temperature (Kelvin)
cp_R	Vector of Dimensionless heat capacities. (length m_kk).
h_RT	Vector of Dimensionless enthalpies. (length m_kk).
s_R	Vector of Dimensionless entropies. (length m_kk).

Implements SpeciesThermoInterpType.

Definition at line 110 of file ConstCpPoly.cpp.

References ConstCpPoly::m_cp0_R, ConstCpPoly::m_h0_R, ConstCpPoly::m_index, ConstCpPoly::m_logt0, ConstCpPoly::m_s0_R, and ConstCpPoly::m_t0.

void reportParameters	(	size_t &	n,
		int &	type,
		doublereal &	tlow,
		doublereal &	thigh,
		doublereal &	pref,
		doublereal *const	coeffs
	)		const

virtual

This utility function reports back the type of parameterization and all of the parameters for the species, index.

All parameters are output variables

Parameters

n	Species index
type	Integer type of the standard type
tlow	output - Minimum temperature
thigh	output - Maximum temperature
pref	output - reference pressure (Pa).
coeffs	Vector of coefficients used to set the parameters for the standard state.