Cantera  2.0
MultiPhase Class Reference

A class for multiphase mixtures. More...

#include <MultiPhase.h>

Inheritance diagram for MultiPhase:
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## Public Types

typedef size_t index_t
Shorthand for an index variable that can't be negative.

## Public Member Functions

MultiPhase ()
Constructor.

MultiPhase (const MultiPhase &right)
Copy Constructor.

virtual ~MultiPhase ()
Destructor.

MultiPhaseoperator= (const MultiPhase &right)
Assignment operator.

void addPhases (std::vector< ThermoPhase * > &phases, const vector_fp &phaseMoles)
Add a vector of phases to the mixture.

Add all phases present in 'mix' to this mixture.

void addPhase (ThermoPhase *p, doublereal moles)
Add a phase to the mixture.

size_t nElements () const
Number of elements.

void checkElementIndex (size_t m) const
Check that the specified element index is in range Throws an exception if m is greater than nElements()-1.

void checkElementArraySize (size_t mm) const
Check that an array size is at least nElements() Throws an exception if mm is less than nElements().

std::string elementName (size_t m) const
Returns the string name of the global element m.

size_t elementIndex (std::string name) const
Returns the index of the element with name name.

size_t nSpecies () const
Number of species, summed over all phases.

void checkSpeciesIndex (size_t k) const
Check that the specified species index is in range Throws an exception if k is greater than nSpecies()-1.

void checkSpeciesArraySize (size_t kk) const
Check that an array size is at least nSpecies() Throws an exception if kk is less than nSpecies().

std::string speciesName (const size_t kGlob) const
Name of species with global index kGlob.

doublereal nAtoms (const size_t kGlob, const size_t mGlob) const
Returns the Number of atoms of global element mGlob in global species kGlob.

void getMoleFractions (doublereal *const x) const
Returns the global Species mole fractions.

void init ()
Process phases and build atomic composition array.

std::string phaseName (const index_t iph) const
Returns the name of the n'th phase.

int phaseIndex (const std::string &pName) const
Returns the index, given the phase name.

doublereal phaseMoles (const index_t n) const
Return the number of moles in phase n.

void setPhaseMoles (const index_t n, const doublereal moles)
Set the number of moles of phase with index n.

ThermoPhasephase (index_t n)
Return a ThermoPhase reference to phase n.

void checkPhaseIndex (size_t m) const
Check that the specified phase index is in range Throws an exception if m is greater than nPhases()

void checkPhaseArraySize (size_t mm) const
Check that an array size is at least nPhases() Throws an exception if mm is less than nPhases().

doublereal speciesMoles (index_t kGlob) const
Returns the moles of global species k.

size_t speciesIndex (index_t k, index_t p) const
Return the global index of the species belonging to phase number p with local index k within the phase.

size_t speciesIndex (std::string speciesName, std::string phaseName)
Return the global index of the species belonging to phase name phaseName with species name speciesName.

doublereal minTemp () const
Minimum temperature for which all solution phases have valid thermo data.

doublereal maxTemp () const
Maximum temperature for which all solution phases have valid thermo data.

doublereal charge () const
Total charge summed over all phases (Coulombs).

doublereal phaseCharge (index_t p) const
Charge (Coulombs) of phase with index p.

doublereal elementMoles (index_t m) const
Total moles of global element m, summed over all phases.

void getChemPotentials (doublereal *mu) const
Returns a vector of Chemical potentials.

void getValidChemPotentials (doublereal not_mu, doublereal *mu, bool standard=false) const
Returns a vector of Valid chemical potentials.

doublereal temperature () const
Temperature [K].

doublereal equilibrate (int XY, doublereal err=1.0e-9, int maxsteps=1000, int maxiter=200, int loglevel=-99)
Set the mixture to a state of chemical equilibrium.

void setTemperature (const doublereal T)
Set the temperature [K].

void setState_TP (const doublereal T, const doublereal Pres)
Set the state of the underlying ThermoPhase objects in one call.

void setState_TPMoles (const doublereal T, const doublereal Pres, const doublereal *Moles)
Set the state of the underlying ThermoPhase objects in one call.

doublereal pressure () const
Pressure [Pa].

doublereal volume () const
Volume [m^3].

void setPressure (doublereal P)
Set the pressure [Pa].

doublereal enthalpy () const
Enthalpy [J].

doublereal IntEnergy () const
Enthalpy [J].

doublereal entropy () const
Entropy [J/K].

doublereal gibbs () const
Gibbs function [J].

doublereal cp () const
Heat capacity at constant pressure [J/K].

index_t nPhases () const
Number of phases.

bool solutionSpecies (index_t kGlob) const
Return true is species kGlob is a species in a multicomponent solution phase.

size_t speciesPhaseIndex (const index_t kGlob) const
Returns the phase index of the Kth "global" species.

doublereal moleFraction (const index_t kGlob) const
Returns the mole fraction of global species k.

void setPhaseMoleFractions (const index_t n, const doublereal *const x)
Set the Mole fractions of the nth phase.

void setMolesByName (compositionMap &xMap)
Set the number numbers of species in the MultiPhase.

void setMolesByName (const std::string &x)
Set the Moles via a string containing their names.

void getMoles (doublereal *molNum) const
Return a vector of global species mole numbers.

void setMoles (const doublereal *n)
Sets all of the global species mole numbers.

Adds moles of a certain species to the mixture.

void getElemAbundances (doublereal *elemAbundances) const
Retrieves a vector of element abundances.

bool tempOK (index_t p) const
Return true if the phase p has valid thermo data for the current temperature.

void updateMoleFractions ()
Update the locally-stored composition within this object to match the current compositions of the phase objects.

Update the locally-stored composition within this object to match the current compositions of the phase objects.

void updatePhases () const
Set the states of the phase objects to the locally-stored state within this MultiPhase object.

## Private Member Functions

void calcElemAbundances () const
Calculate the element abundance vector.

## Private Attributes

vector_fp m_moles
Vector of the number of moles in each phase.

std::vector< ThermoPhase * > m_phase
Vector of the ThermoPhase Pointers.

DenseMatrix m_atoms
Global Stoichiometric Coefficient array.

vector_fp m_moleFractions
Locally stored vector of mole fractions of all species comprising the MultiPhase object.

std::vector< size_t > m_spphase
Mapping between the global species number and the phase ID.

std::vector< size_t > m_spstart
Vector of ints containing of first species index in the global list of species for each phase.

std::vector< std::string > m_enames
String names of the global elements.

vector_int m_atomicNumber
Atomic number of each element.

std::vector< std::string > m_snames
Vector of species names in the problem.

std::map< std::string, size_t > m_enamemap
Returns the global element index, given the element string name.

index_t m_np
Number of phases in the MultiPhase object.

doublereal m_temp
Current value of the temperature (kelvin)

doublereal m_press
Current value of the pressure (Pa)

index_t m_nel
Number of distinct elements in all of the phases.

index_t m_nsp
Number of distinct species in all of the phases.

bool m_init
True if the init() routine has been called, and the MultiPhase frozen.

size_t m_eloc
Global ID of the element corresponding to the electronic charge.

std::vector< bool > m_temp_OK
Vector of bools indicating whether temperatures are ok for phases.

doublereal m_Tmin
Minimum temperature for which thermo parameterizations are valid.

doublereal m_Tmax
Minimum temperature for which thermo parameterizations are valid.

vector_fp m_elemAbundances
Vector of element abundances.

## Detailed Description

A class for multiphase mixtures.

The mixture can contain any number of phases of any type.

This object is the basic tool used by Cantera for use in Multiphase equilibrium calculations.

It is a container for a set of phases. Each phase has a given number of kmoles. Therefore, MultiPhase may be considered an "extrinsic" thermodynamic object, in contrast to the ThermoPhase object, which is an "intrinsic" thermodynamic object.

MultiPhase may be considered to be "upstream" of the ThermoPhase objects in the sense that setting a property within MultiPhase, such as temperature, pressure, or species mole number, affects the underlying ThermoPhase object, but not the other way around.

All phases have the same temperature and pressure, and a specified number of moles for each phase. The phases do not need to have the same elements. For example, a mixture might consist of a gaseous phase with elements (H, C, O, N), a solid carbon phase containing only element C, etc. A master element set will be constructed for the mixture that is the intersection of the elements of each phase.

Below, reference is made to global species and global elements. These refer to the collective species and elements encompassing all of the phases tracked by the object.

The global element list kept by this object is an intersection of the element lists of all the phases that comprise the MultiPhase.

The global species list kept by this object is a concatenated list of all of the species in all the phases that comprise the MultiPhase. The ordering of species is contiguous with respect to the phase id.

Definition at line 60 of file MultiPhase.h.

## Member Typedef Documentation

 typedef size_t index_t

Shorthand for an index variable that can't be negative.

Definition at line 65 of file MultiPhase.h.

## Constructor & Destructor Documentation

 MultiPhase ( )

Constructor.

The constructor takes no arguments, since phases are added using method addPhase().

Definition at line 21 of file MultiPhase.cpp.

 MultiPhase ( const MultiPhase & right )

Copy Constructor.

Parameters
 right Object to be copied

Definition at line 38 of file MultiPhase.cpp.

References MultiPhase::operator=().

 ~MultiPhase ( )
virtual

Destructor.

Does nothing. Class MultiPhase does not take "ownership" (i.e. responsibility for destroying) the phase objects.

Definition at line 58 of file MultiPhase.cpp.

## Member Function Documentation

 MultiPhase & operator= ( const MultiPhase & right )

Assignment operator.

Parameters
 right Object to be copied

Definition at line 66 of file MultiPhase.cpp.

Referenced by MultiPhase::MultiPhase().

 void addPhases ( std::vector< ThermoPhase * > & phases, const vector_fp & phaseMoles )

Add a vector of phases to the mixture.

See the single addPhases command. This just does a bunch of phases at one time

Parameters
 phases Vector of pointers to phases phaseMoles Vector of mole numbers in each phase (kmol)

Definition at line 103 of file MultiPhase.cpp.

 void addPhases ( MultiPhase & mix )

Add all phases present in 'mix' to this mixture.

Parameters
 mix Add all of the phases in another MultiPhase object to the current object.

Definition at line 94 of file MultiPhase.cpp.

 void addPhase ( ThermoPhase * p, doublereal moles )

Add a phase to the mixture.

This function must be called before the init() function is called, which serves to freeze the MultiPhase.

Parameters
 p pointer to the phase object moles total number of moles of all species in this phase

Definition at line 114 of file MultiPhase.cpp.

 size_t nElements ( ) const
inline

Number of elements.

Definition at line 121 of file MultiPhase.h.

References MultiPhase::m_nel.

 void checkElementIndex ( size_t m ) const

Check that the specified element index is in range Throws an exception if m is greater than nElements()-1.

Definition at line 1026 of file MultiPhase.cpp.

References MultiPhase::m_nel.

 void checkElementArraySize ( size_t mm ) const

Check that an array size is at least nElements() Throws an exception if mm is less than nElements().

Used before calls which take an array pointer.

Definition at line 1033 of file MultiPhase.cpp.

References MultiPhase::m_nel.

 std::string elementName ( size_t m ) const

Returns the string name of the global element m.

Parameters
 m index of the global element

Definition at line 1042 of file MultiPhase.cpp.

References MultiPhase::m_enames.

Referenced by MultiPhaseEquil::MultiPhaseEquil().

 size_t elementIndex ( std::string name ) const

Returns the index of the element with name name.

Parameters
 name String name of the global element

Definition at line 1048 of file MultiPhase.cpp.

References MultiPhase::m_enames, MultiPhase::m_nel, and Cantera::npos.

 size_t nSpecies ( ) const
inline

Number of species, summed over all phases.

Definition at line 147 of file MultiPhase.h.

References MultiPhase::m_nsp.

 void checkSpeciesIndex ( size_t k ) const

Check that the specified species index is in range Throws an exception if k is greater than nSpecies()-1.

Definition at line 1058 of file MultiPhase.cpp.

References MultiPhase::m_nsp.

 void checkSpeciesArraySize ( size_t kk ) const

Check that an array size is at least nSpecies() Throws an exception if kk is less than nSpecies().

Used before calls which take an array pointer.

Definition at line 1065 of file MultiPhase.cpp.

References MultiPhase::m_nsp.

 std::string speciesName ( const size_t kGlob ) const

Name of species with global index kGlob.

Parameters
 kGlob global species index

Definition at line 1074 of file MultiPhase.cpp.

References MultiPhase::m_snames.

 doublereal nAtoms ( const size_t kGlob, const size_t mGlob ) const

Returns the Number of atoms of global element mGlob in global species kGlob.

Parameters
 kGlob global species index mGlob global element index
Returns
returns the number of atoms.

Definition at line 1079 of file MultiPhase.cpp.

References MultiPhase::m_atoms.

Referenced by MultiPhaseEquil::getComponents(), and MultiPhaseEquil::MultiPhaseEquil().

 void getMoleFractions ( doublereal *const x ) const

Returns the global Species mole fractions.

Write the array of species mole fractions into array x. The mole fractions are normalized to sum to one in each phase.

Parameters
 x vector of mole fractions. Length = number of global species.

Definition at line 1084 of file MultiPhase.cpp.

References MultiPhase::m_moleFractions.

 void init ( )

Process phases and build atomic composition array.

This method must be called after all phases are added, before doing anything else with the mixture. After init() has been called, no more phases may be added.

Definition at line 193 of file MultiPhase.cpp.

 std::string phaseName ( const index_t iph ) const

Returns the name of the n'th phase.

Parameters
 iph phase Index

Definition at line 1089 of file MultiPhase.cpp.

References Phase::id(), and MultiPhase::m_phase.

Referenced by vcs_MultiPhaseEquil::determine_PhaseStability().

 int phaseIndex ( const std::string & pName ) const

Returns the index, given the phase name.

Parameters
 pName Name of the phase
Returns
returns the index. A value of -1 means the phase isn't in the object.

Definition at line 1095 of file MultiPhase.cpp.

References Phase::id(), MultiPhase::m_np, and MultiPhase::m_phase.

Referenced by MultiPhase::speciesIndex().

 doublereal phaseMoles ( const index_t n ) const

Return the number of moles in phase n.

Parameters
 n Index of the phase.

Definition at line 1108 of file MultiPhase.cpp.

References MultiPhase::m_moles.

 void setPhaseMoles ( const index_t n, const doublereal moles )

Set the number of moles of phase with index n.

Parameters
 n Index of the phase moles Number of moles in the phase (kmol)

Definition at line 1113 of file MultiPhase.cpp.

References MultiPhase::m_moles.

Referenced by vcs_MultiPhaseEquil::equilibrate_TP().

 ThermoPhase & phase ( index_t n )

Return a ThermoPhase reference to phase n.

The state of phase n is also updated to match the state stored locally in the mixture object.

Parameters
 n Phase Index
Returns
Reference to the ThermoPhase object for the phase

Definition at line 260 of file MultiPhase.cpp.

 void checkPhaseIndex ( size_t m ) const

Check that the specified phase index is in range Throws an exception if m is greater than nPhases()

Definition at line 271 of file MultiPhase.cpp.

References MultiPhase::nPhases().

 void checkPhaseArraySize ( size_t mm ) const

Check that an array size is at least nPhases() Throws an exception if mm is less than nPhases().

Used before calls which take an array pointer.

Definition at line 278 of file MultiPhase.cpp.

References MultiPhase::nPhases().

 doublereal speciesMoles ( index_t kGlob ) const

Returns the moles of global species k.

Moles of species k.

Returns the moles of global species k. units = kmol

Parameters
 kGlob Global species index k

Definition at line 287 of file MultiPhase.cpp.

References MultiPhase::m_moleFractions, MultiPhase::m_moles, and MultiPhase::m_spphase.

Referenced by MultiPhaseEquil::computeReactionSteps(), and MultiPhaseEquil::MultiPhaseEquil().

 size_t speciesIndex ( index_t k, index_t p ) const
inline

Return the global index of the species belonging to phase number p with local index k within the phase.

Returns the index of the global species

Parameters
 k local index of the species within the phase p index of the phase

Definition at line 259 of file MultiPhase.h.

References MultiPhase::m_spstart.

 size_t speciesIndex ( std::string speciesName, std::string phaseName )

Return the global index of the species belonging to phase name phaseName with species name speciesName.

Returns the index of the global species

Parameters
 speciesName Species Name phaseName Phase Name
Returns
returns the global index

If the species or phase name is not recognized, this routine throws a CanteraError.

Definition at line 324 of file MultiPhase.cpp.

 doublereal minTemp ( ) const
inline

Minimum temperature for which all solution phases have valid thermo data.

Stoichiometric phases are not considered, since they may have thermo data only valid for conditions for which they are stable.

Definition at line 282 of file MultiPhase.h.

References MultiPhase::m_Tmin.

 doublereal maxTemp ( ) const
inline

Maximum temperature for which all solution phases have valid thermo data.

Stoichiometric phases are not considered, since they may have thermo data only valid for conditions for which they are stable.

Definition at line 290 of file MultiPhase.h.

References MultiPhase::m_Tmax.

 doublereal charge ( ) const

Total charge summed over all phases (Coulombs).

Definition at line 314 of file MultiPhase.cpp.

References MultiPhase::m_np, and MultiPhase::phaseCharge().

 doublereal phaseCharge ( index_t p ) const

Charge (Coulombs) of phase with index p.

Net charge of one phase (Coulombs).

Parameters
 p Phase Index

The net charge is computed as

$Q_p = N_p \sum_k F z_k X_k$

where the sum runs only over species in phase p.

Parameters
 p index of the phase for which the charge is desired.

Definition at line 344 of file MultiPhase.cpp.

Referenced by MultiPhase::charge().

 doublereal elementMoles ( index_t m ) const

Total moles of global element m, summed over all phases.

Parameters
 m Index of the global element

Definition at line 297 of file MultiPhase.cpp.

Referenced by MultiPhaseEquil::MultiPhaseEquil().

 void getChemPotentials ( doublereal * mu ) const

Returns a vector of Chemical potentials.

Get the chemical potentials of all species in all phases.

Write into array mu the chemical potentials of all species [J/kmol]. The chemical potentials are related to the activities by

$$\mu_k = \mu_k^0(T, P) + RT \ln a_k.$$.

Parameters
 mu Chemical potential vector. Length = num global species. Units = J/kmol.

Definition at line 357 of file MultiPhase.cpp.

References MultiPhase::m_np, MultiPhase::m_phase, and MultiPhase::updatePhases().

Referenced by vcs_MultiPhaseEquil::determine_PhaseStability().

 void getValidChemPotentials ( doublereal not_mu, doublereal * mu, bool standard = false ) const

Returns a vector of Valid chemical potentials.

Write into array mu the chemical potentials of all species with thermo data valid for the current temperature [J/kmol]. For other species, set the chemical potential to the value not_mu. If standard is set to true, then the values returned are standard chemical potentials.

This method is designed for use in computing chemical equilibrium by Gibbs minimization. For solution phases (more than one species), this does the same thing as getChemPotentials. But for stoichiometric phases, this writes into array mu the user-specified value not_mu instead of the chemical potential if the temperature is outside the range for which the thermo data for the one species in the phase are valid. The need for this arises since many condensed phases have thermo data fit only for the temperature range for which they are stable. For example, in the NASA database, the fits for H2O(s) are only done up to 0 C, the fits for H2O(L) are only done from 0 C to 100 C, etc. Using the polynomial fits outside the range for which the fits were done can result in spurious chemical potentials, and can lead to condensed phases appearing when in fact they should be absent.

By setting not_mu to a large positive value, it is possible to force routines which seek to minimize the Gibbs free energy of the mixture to zero out any phases outside the temperature range for which their thermo data are valid.

Parameters
 not_mu Value of the chemical potential to set species in phases, for which the thermo data is not valid mu Vector of chemical potentials length = Global species, units = J kmol-1 standard If this method is called with standard set to true, then the composition-independent standard chemical potentials are returned instead of the composition-dependent chemical potentials.

Definition at line 394 of file MultiPhase.cpp.

 doublereal temperature ( ) const
inline

Temperature [K].

Definition at line 371 of file MultiPhase.h.

References MultiPhase::m_temp.

 doublereal equilibrate ( int XY, doublereal err = 1.0e-9, int maxsteps = 1000, int maxiter = 200, int loglevel = -99 )

Set the mixture to a state of chemical equilibrium.

Parameters
 XY Integer flag specifying properties to hold fixed. err Error tolerance for $$\Delta \mu/RT$$ for all reactions. Also used as the relative error tolerance for the outer loop. maxsteps Maximum number of steps to take in solving the fixed TP problem. maxiter Maximum number of "outer" iterations for problems holding fixed something other than (T,P). loglevel Level of diagnostic output, written to a file in HTML format.

Definition at line 679 of file MultiPhase.cpp.

Referenced by Cantera::equilibrate(), and Cantera::vcs_equilibrate_1().

 void setTemperature ( const doublereal T )

Set the temperature [K].

Parameters
 T value of the temperature (Kelvin)

Definition at line 1017 of file MultiPhase.cpp.

 void setState_TP ( const doublereal T, const doublereal Pres )

Set the state of the underlying ThermoPhase objects in one call.

Parameters
 T Temperature of the system (kelvin) Pres pressure of the system (pascal) (kmol)

Definition at line 615 of file MultiPhase.cpp.

 void setState_TPMoles ( const doublereal T, const doublereal Pres, const doublereal * Moles )

Set the state of the underlying ThermoPhase objects in one call.

Parameters
 T Temperature of the system (kelvin) Pres pressure of the system (pascal) Moles Vector of mole numbers of all the species in all the phases (kmol)

Definition at line 625 of file MultiPhase.cpp.

References MultiPhase::m_press, MultiPhase::m_temp, and MultiPhase::setMoles().

 doublereal pressure ( ) const
inline

Pressure [Pa].

Definition at line 416 of file MultiPhase.h.

References MultiPhase::m_press.

 doublereal volume ( ) const

Volume [m^3].

The total mixture volume [m^3].

Returns the cummulative sum of the volumes of all the phases in the MultiPhase.

Definition at line 668 of file MultiPhase.cpp.

References MultiPhase::m_moles, MultiPhase::m_np, and MultiPhase::m_phase.

Referenced by MultiPhase::equilibrate(), and vcs_MultiPhaseEquil::equilibrate_TV().

 void setPressure ( doublereal P )
inline

Set the pressure [Pa].

Parameters
 P Set the pressure in the MultiPhase object (Pa)

Definition at line 431 of file MultiPhase.h.

References MultiPhase::m_press, and MultiPhase::updatePhases().

Referenced by MultiPhase::equilibrate(), and vcs_MultiPhaseEquil::equilibrate_TV().

 doublereal enthalpy ( ) const

Enthalpy [J].

The enthalpy of the mixture (J).

Definition at line 440 of file MultiPhase.cpp.

 doublereal IntEnergy ( ) const

Enthalpy [J].

The internal energy of the mixture (J).

Definition at line 454 of file MultiPhase.cpp.

Referenced by vcs_MultiPhaseEquil::equilibrate(), and vcs_MultiPhaseEquil::equilibrate_HP().

 doublereal entropy ( ) const

Entropy [J/K].

The entropy of the mixture (J/K).

Definition at line 468 of file MultiPhase.cpp.

 doublereal gibbs ( ) const

Gibbs function [J].

The Gibbs free energy of the mixture (J).

Definition at line 426 of file MultiPhase.cpp.

 doublereal cp ( ) const

Heat capacity at constant pressure [J/K].

The specific heat at constant pressure and composition (J/K).

Note that this does not account for changes in composition of the mixture with temperature.

Definition at line 484 of file MultiPhase.cpp.

Referenced by MultiPhase::equilibrate().

 index_t nPhases ( ) const
inline

Number of phases.

Definition at line 452 of file MultiPhase.h.

References MultiPhase::m_np.

 bool solutionSpecies ( index_t kGlob ) const

Return true is species kGlob is a species in a multicomponent solution phase.

True if species k belongs to a solution phase.

Parameters
 kGlob index of the global species

Definition at line 416 of file MultiPhase.cpp.

References MultiPhase::m_phase, MultiPhase::m_spphase, and MultiPhase::nSpecies().

Referenced by MultiPhaseEquil::getComponents(), and MultiPhaseEquil::MultiPhaseEquil().

 size_t speciesPhaseIndex ( const index_t kGlob ) const

Returns the phase index of the Kth "global" species.

Parameters
 kGlob Global species index.
Returns
Returns the index of the owning phase.

Definition at line 1118 of file MultiPhase.cpp.

References MultiPhase::m_spphase.

Referenced by MultiPhaseEquil::computeReactionSteps(), and MultiPhaseEquil::MultiPhaseEquil().

 doublereal moleFraction ( const index_t kGlob ) const

Returns the mole fraction of global species k.

Parameters
 kGlob Index of the global species.

Definition at line 1123 of file MultiPhase.cpp.

References MultiPhase::m_moleFractions.

 void setPhaseMoleFractions ( const index_t n, const doublereal *const x )

Set the Mole fractions of the nth phase.

Set the mole fractions of phase n to the values in array x.

This function sets the mole fractions of the nth phase. Note, the mole number of the phase stays constant

Parameters
 n ID of the phase x Vector of input mole fractions.

Definition at line 501 of file MultiPhase.cpp.

 void setMolesByName ( compositionMap & xMap )

Set the number numbers of species in the MultiPhase.

Parameters
 xMap CompositionMap of the species with nonzero mole numbers units = kmol.

Definition at line 517 of file MultiPhase.cpp.

Referenced by MultiPhase::setMolesByName().

 void setMolesByName ( const std::string & x )

Set the Moles via a string containing their names.

The string x is in the form of a composition map Species which are not listed by name in the composition map are set to zero.

Parameters
 x string x in the form of a composition map where values are the moles of the species.

Definition at line 533 of file MultiPhase.cpp.

 void getMoles ( doublereal * molNum ) const

Return a vector of global species mole numbers.

Returns a vector of the number of moles of each species in the multiphase object.

Parameters
 molNum Vector of doubles of length nSpecies containing the global mole numbers (kmol).

Definition at line 552 of file MultiPhase.cpp.

 void setMoles ( const doublereal * n )

Sets all of the global species mole numbers.

Set the species moles to the values in array n.

Sets the number of moles of each species in the multiphase object.

Parameters
 n Vector of doubles of length nSpecies containing the global mole numbers (kmol).

The state of each phase object is also updated to have the specified composition and the mixture temperature and pressure.

Definition at line 573 of file MultiPhase.cpp.

Adds moles of a certain species to the mixture.

Parameters
 indexS Index of the species in the MultiPhase object addedMoles Value of the moles that are added to the species.

Definition at line 604 of file MultiPhase.cpp.

References DATA_PTR, MultiPhase::getMoles(), MultiPhase::m_nsp, and MultiPhase::setMoles().

 void getElemAbundances ( doublereal * elemAbundances ) const

Retrieves a vector of element abundances.

Parameters
 elemAbundances Vector of element abundances Length = number of elements in the MultiPhase object. Index is the global element index units is in kmol.

Definition at line 633 of file MultiPhase.cpp.

 bool tempOK ( index_t p ) const

Return true if the phase p has valid thermo data for the current temperature.

Parameters
 p Index of the phase.

Definition at line 1129 of file MultiPhase.cpp.

References MultiPhase::m_temp_OK.

Referenced by MultiPhase::getValidChemPotentials(), and MultiPhaseEquil::MultiPhaseEquil().

 void updateMoleFractions ( )

Update the locally-stored composition within this object to match the current compositions of the phase objects.

Update the locally-stored species mole fractions.

Deprecated:
'update' is confusing within this context. Switching to the terminology 'uploadFrom' and 'downloadTo'. uploadFrom means to query the underlying ThermoPhase objects and fill in the resulting information within this object. downloadTo means to take information from this object and put it into the underlying ThermoPhase objects. switch to uploadMoleFractionsFromPhases();

Definition at line 1135 of file MultiPhase.cpp.

Update the locally-stored composition within this object to match the current compositions of the phase objects.

Update the locally-stored species mole fractions.

Query the underlying ThermoPhase objects for their mole fractions and fill in the mole fraction vector of this current object. Adjust element compositions within this object to match.

This is an upload operation in the sense that we are taking downstream information (ThermoPhase object info) and applying it to an upstream object (MultiPhase object).

Definition at line 1141 of file MultiPhase.cpp.

 void updatePhases ( ) const

Set the states of the phase objects to the locally-stored state within this MultiPhase object.

synchronize the phase objects with the mixture state.

Note that if individual phases have T and P different than that stored locally, the phase T and P will be modified.

This is an download operation in the sense that we are taking upstream object information (MultiPhase object) and applying it to downstream objects (ThermoPhase object information)

Therefore, the term, "update", is appropriate for a downstream operation.

This method sets each phase to the mixture temperature and pressure, and sets the phase mole fractions based on the mixture mole numbers.

Definition at line 1164 of file MultiPhase.cpp.

 void calcElemAbundances ( ) const
private

Calculate the element abundance vector.

Definition at line 643 of file MultiPhase.cpp.

## Member Data Documentation

 vector_fp m_moles
private

Vector of the number of moles in each phase.

Length = m_np, number of phases.

Definition at line 612 of file MultiPhase.h.

 std::vector m_phase
private
 DenseMatrix m_atoms
private

Global Stoichiometric Coefficient array.

This is a two dimensional array m_atoms(m, k). The first index is the global element index. The second index, k, is the global species index. The value is the number of atoms of type m in species k.

Definition at line 626 of file MultiPhase.h.

 vector_fp m_moleFractions
private

Locally stored vector of mole fractions of all species comprising the MultiPhase object.

Definition at line 632 of file MultiPhase.h.

 std::vector m_spphase
private

Mapping between the global species number and the phase ID.

m_spphase[kGlobal] = iPhase Length = number of global species

Definition at line 639 of file MultiPhase.h.

 std::vector m_spstart
private

Vector of ints containing of first species index in the global list of species for each phase.

kfirst = m_spstart[ip], kfirst is the index of the first species in the ip'th phase.

Definition at line 647 of file MultiPhase.h.

 std::vector m_enames
private

String names of the global elements.

This has a length equal to the number of global elements.

Definition at line 653 of file MultiPhase.h.

 vector_int m_atomicNumber
private

Atomic number of each element.

This is the atomic number of each global element.

Definition at line 659 of file MultiPhase.h.

 std::vector m_snames
private

Vector of species names in the problem.

Vector is over all species defined in the object, the global species index.

Definition at line 666 of file MultiPhase.h.

Referenced by MultiPhase::init(), and MultiPhase::speciesName().

 std::map m_enamemap
private

Returns the global element index, given the element string name.

-> used in the construction. However, wonder if it needs to be global.

Definition at line 672 of file MultiPhase.h.

 index_t m_np
private
 doublereal m_temp
private

Current value of the temperature (kelvin)

Definition at line 680 of file MultiPhase.h.

 doublereal m_press
private

Current value of the pressure (Pa)

Definition at line 683 of file MultiPhase.h.

 index_t m_nel
private

Number of distinct elements in all of the phases.

Definition at line 688 of file MultiPhase.h.

 index_t m_nsp
private

Number of distinct species in all of the phases.

Definition at line 692 of file MultiPhase.h.

 bool m_init
private

True if the init() routine has been called, and the MultiPhase frozen.

Definition at line 695 of file MultiPhase.h.

 size_t m_eloc
private

Global ID of the element corresponding to the electronic charge.

If there is none, then this is equal to -1

Definition at line 701 of file MultiPhase.h.

Referenced by MultiPhase::addPhase(), MultiPhase::init(), and MultiPhase::operator=().

 std::vector m_temp_OK
mutableprivate

Vector of bools indicating whether temperatures are ok for phases.

If the current temperature is outside the range of valid temperatures for the phase thermodynamics, the phase flag is set to false.

Definition at line 708 of file MultiPhase.h.

 doublereal m_Tmin
private

Minimum temperature for which thermo parameterizations are valid.

Stoichiometric phases are ignored in this determination. units Kelvin

Definition at line 715 of file MultiPhase.h.

 doublereal m_Tmax
private

Minimum temperature for which thermo parameterizations are valid.

Stoichiometric phases are ignored in this determination. units Kelvin

Definition at line 722 of file MultiPhase.h.

 vector_fp m_elemAbundances
mutableprivate

Vector of element abundances.

m_elemAbundances[mGlobal] = kmol of element mGlobal summed over all species in all phases.

Definition at line 729 of file MultiPhase.h.

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