A species thermodynamic property manager for the NASA polynomial parameterization with two temperature ranges. More...

#include <NasaThermo.h>

Inheritance diagram for NasaThermo:

Collaboration diagram for NasaThermo:

Public Member Functions
	NasaThermo (const NasaThermo &right)

NasaThermo &	operator= (const NasaThermo &right)

virtual SpeciesThermo *	duplMyselfAsSpeciesThermo () const
	Duplication routine for objects derived from SpeciesThermo. More...

virtual void	install (const std::string &name, size_t index, int type, const doublereal *c, doublereal min_temp, doublereal max_temp, doublereal ref_pressure)
	install a new species thermodynamic property parameterization for one species. More...

virtual void	install_STIT (SpeciesThermoInterpType *stit_ptr)
	Install a new species thermodynamic property parameterization for one species. More...

virtual void	update_one (size_t k, doublereal t, doublereal cp_R, doublereal h_RT, doublereal *s_R) const
	Like update(), but only updates the single species k. More...

virtual void	update (doublereal t, doublereal cp_R, doublereal h_RT, doublereal *s_R) const
	Compute the reference-state properties for all species. More...

virtual doublereal	minTemp (size_t k=npos) const
	Minimum temperature. More...

virtual doublereal	maxTemp (size_t k=npos) const
	Maximum temperature. More...

virtual doublereal	refPressure (size_t k=npos) const
	The reference-state pressure for species k. More...

virtual int	reportType (size_t index) const
	This utility function reports the type of parameterization used for the species with index number index. More...

virtual void	reportParams (size_t index, int &type, doublereal *const c, doublereal &minTemp, doublereal &maxTemp, doublereal &refPressure) const

Public Member Functions inherited from SpeciesThermo
	SpeciesThermo ()
	Constructor. More...

virtual	~SpeciesThermo ()
	Destructor. More...

	SpeciesThermo (const SpeciesThermo &right)
	Copy Constructor for the SpeciesThermo object. More...

SpeciesThermo &	operator= (const SpeciesThermo &right)
	Assignment operator for the SpeciesThermo object. More...

Public Attributes
const int	ID
	Initialized to the type of parameterization. More...

Public Attributes inherited from SpeciesThermo
bool	m_allow_discontinuities

Protected Member Functions
doublereal	cp_R (double t, const doublereal *c)
	Compute the nondimensional heat capacity using the given NASA polynomial. More...

doublereal	enthalpy_RT (double t, const doublereal *c)
	Compute the nondimensional enthalpy using the given NASA polynomial. More...

doublereal	entropy_R (double t, const doublereal *c)
	Compute the nondimensional entropy using the given NASA polynomial. More...

double	checkContinuity (const std::string &name, double tmid, doublereal clow, doublereal chigh)
	Adjust polynomials to be continuous at the midpoint temperature. More...

void	fixDiscontinuities (doublereal Tlow, doublereal Tmid, doublereal Thigh, doublereal clow, doublereal chigh)
	Adjust polynomials to be continuous at the midpoint temperature. More...

Protected Attributes
std::vector< std::vector < NasaPoly1 > >	m_high
	Vector of vector of NasaPoly1's for the high temp region. More...

std::vector< std::vector < NasaPoly1 > >	m_low
	Vector of vector of NasaPoly1's for the low temp region. More...

std::map< int, int >	m_index
	Map between the midpoint temperature, as an int, to the group number. More...

vector_fp	m_tmid
	Vector of log temperature limits. More...

doublereal	m_tlow_max
	Maximum value of the low temperature limit. More...

doublereal	m_thigh_min
	Minimum value of the high temperature limit. More...

vector_fp	m_tlow
	Vector of low temperature limits (species index) More...

vector_fp	m_thigh
	Vector of low temperature limits (species index) More...

doublereal	m_p0
	Reference pressure (Pa) More...

int	m_ngroups
	number of groups More...

vector_fp	m_t
	Vector of temperature polynomials. More...

std::map< size_t, size_t >	m_group_map

std::map< size_t, size_t >	m_posInGroup_map

std::map< size_t, std::string >	m_name
	Species name as a function of the species index. More...

Detailed Description

A species thermodynamic property manager for the NASA polynomial parameterization with two temperature ranges.

This class is designed to efficiently evaluate the properties of a large number of species with the NASA parameterization.

The original NASA polynomial parameterization expressed the heat capacity as a fourth-order polynomial in temperature, with separate coefficients for each of two temperature ranges. (The newer NASA format adds coefficients for 1/T and 1/T^2, and allows multiple temperature ranges.) This class is designed for use with the original parameterization, which is used, for example, by the Chemkin software package.

In many cases, the midpoint temperature is the same for many species. To take advantage of this, class NasaThermo groups species with a common midpoint temperature, so that checking which range the desired temperature is in need be done only once for each group.

Note: There is a special CTML element for entering the coefficients of this parameterization.

See Also: importCTML

Definition at line 47 of file NasaThermo.h.

Member Function Documentation

virtual SpeciesThermo* duplMyselfAsSpeciesThermo ( ) const

inlinevirtual

Duplication routine for objects derived from SpeciesThermo.

This function can be used to duplicate objects derived from SpeciesThermo even if the application only has a pointer to SpeciesThermo to work with.

Implements SpeciesThermo.

Definition at line 56 of file NasaThermo.h.

void install	(	const std::string &	name,
		size_t	index,
		int	type,
		const doublereal *	c,
		doublereal	min_temp,
		doublereal	max_temp,
		doublereal	ref_pressure
	)

virtual

install a new species thermodynamic property parameterization for one species.

Parameters

name	Name of the species
index	The 'update' method will update the property values for this species at position i index in the property arrays.
type	int flag specifying the type of parameterization to be installed.
c	vector of coefficients for the parameterization. c[0] midpoint temperature c[1] - c[7] coefficients for low T range c[8] - c[14] coefficients for high T range
min_temp	minimum temperature for which this parameterization is valid.
max_temp	maximum temperature for which this parameterization is valid.
ref_pressure	standard-state pressure for this parameterization.

See Also: speciesThermoTypes.h

Implements SpeciesThermo.

Definition at line 58 of file NasaThermo.cpp.

References AssertThrowMsg, NasaThermo::checkContinuity(), NasaThermo::fixDiscontinuities(), Cantera::fp2str(), NasaThermo::m_group_map, NasaThermo::m_high, NasaThermo::m_index, NasaThermo::m_low, NasaThermo::m_name, NasaThermo::m_ngroups, NasaThermo::m_p0, NasaThermo::m_posInGroup_map, NasaThermo::m_thigh, NasaThermo::m_thigh_min, NasaThermo::m_tlow, NasaThermo::m_tlow_max, NasaThermo::m_tmid, and Cantera::writelog().

virtual void install_STIT ( SpeciesThermoInterpType * stit_ptr )

inlinevirtual

Install a new species thermodynamic property parameterization for one species.

Parameters

stit_ptr Pointer to the SpeciesThermoInterpType object This will set up the thermo for one species

Implements SpeciesThermo.

Definition at line 86 of file NasaThermo.h.

void update_one	(	size_t	k,
		doublereal	t,
		doublereal *	cp_R,
		doublereal *	h_RT,
		doublereal *	s_R
	)		const

virtual

Like update(), but only updates the single species k.

Parameters

k	species index
t	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).

Reimplemented from SpeciesThermo.

Definition at line 124 of file NasaThermo.cpp.

References NasaThermo::m_group_map, NasaThermo::m_high, NasaThermo::m_low, NasaThermo::m_posInGroup_map, NasaThermo::m_t, SpeciesThermoInterpType::maxTemp(), and NasaPoly1::updateProperties().

void update	(	doublereal	T,
		doublereal *	cp_R,
		doublereal *	h_RT,
		doublereal *	s_R
	)		const

virtual

Compute the reference-state properties for all 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 each of the standard states.

Parameters

T	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 SpeciesThermo.

Definition at line 149 of file NasaThermo.cpp.

References NasaThermo::m_high, NasaThermo::m_low, NasaThermo::m_ngroups, NasaThermo::m_t, and NasaThermo::m_tmid.

virtual doublereal minTemp ( size_t k = npos ) const

inlinevirtual

Minimum temperature.

If no argument is supplied, this method returns the minimum temperature for which all parameterizations are valid. If an integer index k is supplied, then the value returned is the minimum temperature for species k in the phase.

Parameters

k	Species index

Implements SpeciesThermo.

Definition at line 104 of file NasaThermo.h.

References NasaThermo::m_tlow, NasaThermo::m_tlow_max, and Cantera::npos.

virtual doublereal maxTemp ( size_t k = npos ) const

inlinevirtual

Maximum temperature.

If no argument is supplied, this method returns the maximum temperature for which all parameterizations are valid. If an integer index k is supplied, then the value returned is the maximum temperature for parameterization k.

Parameters

k	Species Index

Implements SpeciesThermo.

Definition at line 112 of file NasaThermo.h.

References NasaThermo::m_thigh, NasaThermo::m_thigh_min, and Cantera::npos.

virtual doublereal refPressure ( size_t k = npos ) const

inlinevirtual

The reference-state pressure for species k.

Returns the reference state pressure in Pascals for species k. If k is left out of the argument list, it returns the reference state pressure for the first species. Note that some SpeciesThermo implementations, such as those for ideal gases, require that all species in the same phase have the same reference state pressures.

Parameters

k	Species Index

Implements SpeciesThermo.

Definition at line 120 of file NasaThermo.h.

References NasaThermo::m_p0.

virtual int reportType ( size_t index ) const

inlinevirtual

This utility function reports the type of parameterization used for the species with index number index.

Parameters

index Species index

Implements SpeciesThermo.

Definition at line 124 of file NasaThermo.h.

References NASA.

Referenced by NasaThermo::reportParams().

void reportParams	(	size_t	index,
		int &	type,
		doublereal *const	c,
		doublereal &	minTemp,
		doublereal &	maxTemp,
		doublereal &	refPressure
	)		const

virtual

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

Parameters

index	Species index
type	Integer type of the standard type
c	Vector of coefficients used to set the parameters for the standard state. For the NASA object, there are 15 coefficients.
minTemp	output - Minimum temperature
maxTemp	output - Maximum temperature
refPressure	output - reference pressure (Pa).

Deprecated:

Implements SpeciesThermo.

Definition at line 178 of file NasaThermo.cpp.

References NasaThermo::m_group_map, NasaThermo::m_high, NasaThermo::m_low, NasaThermo::m_posInGroup_map, SpeciesThermoInterpType::maxTemp(), NASA, NASA1, NasaPoly1::reportParameters(), NasaThermo::reportType(), and Cantera::warn_deprecated().

doublereal cp_R	(	double	t,
		const doublereal *	c
	)

protected

Compute the nondimensional heat capacity using the given NASA polynomial.

Parameters

t	temperature
c	coefficient array

Definition at line 264 of file NasaThermo.cpp.

References Cantera::poly4().

Referenced by NasaThermo::checkContinuity(), and NasaThermo::fixDiscontinuities().

doublereal enthalpy_RT	(	double	t,
		const doublereal *	c
	)

protected

Compute the nondimensional enthalpy using the given NASA polynomial.

Parameters

t	temperature
c	coefficient array

Definition at line 269 of file NasaThermo.cpp.

References Cantera::OneThird.

Referenced by NasaThermo::checkContinuity(), and NasaThermo::fixDiscontinuities().

doublereal entropy_R	(	double	t,
		const doublereal *	c
	)

protected

Compute the nondimensional entropy using the given NASA polynomial.

Parameters

t	temperature
c	coefficient array

Definition at line 275 of file NasaThermo.cpp.

References Cantera::OneThird.

Referenced by NasaThermo::checkContinuity(), and NasaThermo::fixDiscontinuities().

doublereal checkContinuity	(	const std::string &	name,
		double	tmid,
		doublereal *	clow,
		doublereal *	chigh
	)

protected

Adjust polynomials to be continuous at the midpoint temperature.

Check to see if the provided coefficients are nearly continuous. Adjust the values to get more precise continuity to avoid convergence issues with algorithms that expect these quantities to be continuous.

Parameters

name	string name of species
tmid	Mid temperature, between the two temperature regions
clow	coefficients for lower temperature region
chigh	coefficients for higher temperature region

Definition at line 281 of file NasaThermo.cpp.

References NasaThermo::cp_R(), NasaThermo::enthalpy_RT(), NasaThermo::entropy_R(), Cantera::fp2str(), and Cantera::writelog().

Referenced by NasaThermo::install().

void fixDiscontinuities	(	doublereal	Tlow,
		doublereal	Tmid,
		doublereal	Thigh,
		doublereal *	clow,
		doublereal *	chigh
	)

protected

Adjust polynomials to be continuous at the midpoint temperature.

We seek a set of coefficients for the low- and high-temperature polynomials which are continuous in Cp, H, and S at the midpoint while minimizing the difference between the values in Cp, H, and S over the entire valid temperature range. To do this, we formulate a linear least-squares problem to be solved for 11 of the 14 coefficients, with the remaining 3 coefficients eliminated in the process of satisfying the continuity constraints.

Parameters

Tlow	Minimum temperature at which the low-T polynomial is valid
Tmid	Mid temperature, between the two temperature regions
Thigh	Maximum temperature at which the high-T polynomial is valid
clow	coefficients for lower temperature region
chigh	coefficients for higher temperature region

Definition at line 332 of file NasaThermo.cpp.

References AssertTrace, NasaThermo::cp_R(), NasaThermo::enthalpy_RT(), and NasaThermo::entropy_R().

Referenced by NasaThermo::install().

Member Data Documentation

const int ID

Initialized to the type of parameterization.

Note, this value is used in some template functions

Definition at line 158 of file NasaThermo.h.

std::vector<std::vector<NasaPoly1> > m_high

protected

Vector of vector of NasaPoly1's for the high temp region.

This is the high temp region representation. The first Length is equal to the number of groups. The second vector is equal to the number of species in that particular group.

Definition at line 168 of file NasaThermo.h.

Referenced by NasaThermo::install(), NasaThermo::reportParams(), NasaThermo::update(), and NasaThermo::update_one().

std::vector<std::vector<NasaPoly1> > m_low

protected

Vector of vector of NasaPoly1's for the low temp region.

This is the low temp region representation. The first Length is equal to the number of groups. The second vector is equal to the number of species in that particular group.

Definition at line 177 of file NasaThermo.h.

Referenced by NasaThermo::install(), NasaThermo::reportParams(), NasaThermo::update(), and NasaThermo::update_one().

std::map<int, int> m_index

protected

Map between the midpoint temperature, as an int, to the group number.

Length is equal to the number of groups. Only used in the setup.

Definition at line 183 of file NasaThermo.h.

Referenced by NasaThermo::install().

vector_fp m_tmid

protected

Vector of log temperature limits.

Length is equal to the number of groups.

Definition at line 189 of file NasaThermo.h.

Referenced by NasaThermo::install(), and NasaThermo::update().

doublereal m_tlow_max

protected

Maximum value of the low temperature limit.

Definition at line 192 of file NasaThermo.h.

Referenced by NasaThermo::install(), and NasaThermo::minTemp().

doublereal m_thigh_min

protected

Minimum value of the high temperature limit.

Definition at line 195 of file NasaThermo.h.

Referenced by NasaThermo::install(), and NasaThermo::maxTemp().

vector_fp m_tlow

protected

Vector of low temperature limits (species index)

Length is equal to number of species

Definition at line 201 of file NasaThermo.h.

Referenced by NasaThermo::install(), and NasaThermo::minTemp().

vector_fp m_thigh

protected

Vector of low temperature limits (species index)

Length is equal to number of species

Definition at line 207 of file NasaThermo.h.

Referenced by NasaThermo::install(), and NasaThermo::maxTemp().

doublereal m_p0

protected

Reference pressure (Pa)

all species must have the same reference pressure.

Definition at line 213 of file NasaThermo.h.

Referenced by NasaThermo::install(), and NasaThermo::refPressure().

int m_ngroups

protected

number of groups

Definition at line 216 of file NasaThermo.h.

Referenced by NasaThermo::install(), and NasaThermo::update().

vector_fp m_t

mutableprotected

Vector of temperature polynomials.

Definition at line 219 of file NasaThermo.h.

Referenced by NasaThermo::update(), and NasaThermo::update_one().

std::map<size_t, size_t> m_group_map

mutableprotected

This map takes as its index, the species index in the phase. It returns the group index, where the temperature polynomials for that species are stored. group indices start at 1, so a decrement is always performed to access vectors.

Definition at line 227 of file NasaThermo.h.

Referenced by NasaThermo::install(), NasaThermo::reportParams(), and NasaThermo::update_one().

std::map<size_t, size_t> m_posInGroup_map

mutableprotected

This map takes as its index, the species index in the phase. It returns the position index within the group, where the temperature polynomials for that species are stored.

Definition at line 234 of file NasaThermo.h.

Referenced by NasaThermo::install(), NasaThermo::reportParams(), and NasaThermo::update_one().

std::map<size_t, std::string> m_name

mutableprotected

Species name as a function of the species index.

Definition at line 237 of file NasaThermo.h.

Referenced by NasaThermo::install().

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

Public Member Functions

Public Attributes

Protected Member Functions

Protected Attributes

Detailed Description

Member Function Documentation

Member Data Documentation