MineralEQ3.h

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/**
 *  @file MineralEQ3.h
 * Header file for the MineralEQ3 class, which represents a fixed-composition
 * incompressible substance based on EQ3's parameterization (see \ref thermoprops and
 * class \link Cantera::MineralEQ3 MineralEQ3\endlink)
 */

/*
 * Copyright (2006) Sandia Corporation. Under the terms of
 * Contract DE-AC04-94AL85000 with Sandia Corporation, the
 * U.S. Government retains certain rights in this software.
 *
 * Copyright 2001 California Institute of Technology
 */
#ifndef CT_MINERALEQ3_H
#define CT_MINERALEQ3_H

#include "StoichSubstanceSSTP.h"

namespace Cantera
{

//!  Class MineralEQ3 represents a stoichiometric (fixed
//!   composition)  incompressible substance based on EQ3's parameterization
/*!
 *  This class inherits from SingleSpeciesSSTP class.
 *  EQ's parameterization is mapped onto the Shomate polynomial class.
 *
 * <b> Specification of Species Standard State Properties </b>
 *
 *  This class inherits from SingleSpeciesTP.
 *  It is assumed that the reference state thermodynamics may be
 *  obtained by a pointer to a populated species thermodynamic property
 *  manager class (see ThermoPhase::m_spthermo). How to relate pressure
 *  changes to the reference state thermodynamics is resolved at this level.
 *
 *  For an incompressible,
 * stoichiometric substance, the molar internal energy is
 * independent of pressure. Since the thermodynamic properties
 * are specified by giving the standard-state enthalpy, the
 * term \f$ P_0 \hat v\f$ is subtracted from the specified molar
 * enthalpy to compute the molar internal energy. The entropy is
 * assumed to be independent of the pressure.
 *
 * The enthalpy function is given by the following relation.
 *
 *       \f[
 *              h^o_k(T,P) =
 *                  h^{ref}_k(T) + \tilde v \left( P - P_{ref} \right)
 *       \f]
 *
 * For an incompressible,
 * stoichiometric substance, the molar internal energy is
 * independent of pressure. Since the thermodynamic properties
 * are specified by giving the standard-state enthalpy, the
 * term \f$ P_{ref} \tilde v\f$ is subtracted from the specified reference molar
 * enthalpy to compute the molar internal energy.
 *
 *       \f[
 *            u^o_k(T,P) = h^{ref}_k(T) - P_{ref} \tilde v
 *       \f]
 *
 * The standard state heat capacity and entropy are independent
 * of pressure. The standard state Gibbs free energy is obtained
 * from the enthalpy and entropy functions.
 *
 * <b> Specification of Solution Thermodynamic Properties </b>
 *
 *  All solution properties are obtained from the standard state
 *  species functions, since there is only one species in the phase.
 *
 * <b> %Application within Kinetics Managers </b>
 *
 * The standard concentration is equal to 1.0. This means that the
 * kinetics operator works on an (activities basis). Since this
 * is a stoichiometric substance, this means that the concentration
 * of this phase drops out of kinetics expressions.
 *
 * An example of a reaction using this is a sticking coefficient
 * reaction of a substance in an ideal gas phase on a surface with a bulk phase
 * species in this phase. In this case, the rate of progress for this
 * reaction, \f$ R_s \f$, may be expressed via the following equation:
 *   \f[
 *    R_s = k_s C_{gas}
 *   \f]
 * where the units for \f$ R_s \f$ are kmol m-2 s-1. \f$ C_{gas} \f$ has units
 * of kmol m-3. Therefore, the kinetic rate constant,  \f$ k_s \f$, has
 * units of m s-1. Nowhere does the concentration of the bulk phase
 * appear in the rate constant expression, since it's a stoichiometric
 * phase and the activity is always equal to 1.0.
 *
 * @ingroup thermoprops
 */
class MineralEQ3 : public StoichSubstanceSSTP
{
public:
    //! Default constructor for the StoichSubstanceSSTP class
    MineralEQ3() {}

    //! Construct and initialize a StoichSubstanceSSTP ThermoPhase object
    //! directly from an ASCII input file
    /*!
     * @param infile name of the input file
     * @param id     name of the phase id in the file.
     *               If this is blank, the first phase in the file is used.
     */
    MineralEQ3(const std::string& infile, std::string id = "");

    //! Construct and initialize a StoichSubstanceSSTP ThermoPhase object
    //! directly from an XML database
    /*!
     *  @param phaseRef XML node pointing to a StoichSubstanceSSTP description
     *  @param id       Id of the phase.
     */
    MineralEQ3(XML_Node& phaseRef, const std::string& id = "");

    //! Copy constructor
    /*!
     * @param right Object to be copied
     */
    MineralEQ3(const MineralEQ3&  right);

    //! Assignment operator
    /*!
     * @param right Object to be copied
     */
    MineralEQ3& operator=(const MineralEQ3& right);

    //! Duplication function
    /*!
     * This virtual function is used to create a duplicate of the
     * current phase. It's used to duplicate the phase when given
     * a ThermoPhase pointer to the phase.
     *
     * @return It returns a ThermoPhase pointer.
     */
    ThermoPhase* duplMyselfAsThermoPhase() const;

    /**
     * Equation of state flag.
     *
     * Returns the value cStoichSubstance, defined in mix_defs.h.
     */
    virtual int eosType() const;

    //! @name Mechanical Equation of State
    //! @{

    //! Report the Pressure. Units: Pa.
    /*!
     * For an incompressible substance, the density is independent
     * of pressure. This method simply returns the stored
     * pressure value.
     */
    virtual doublereal pressure() const;

    //! Set the pressure at constant temperature. Units: Pa.
    /*!
     * For an incompressible substance, the density is
     * independent of pressure. Therefore, this method only
     * stores the specified pressure value. It does not
     * modify the density.
     *
     * @param p Pressure (units - Pa)
     */
    virtual void setPressure(doublereal p);

    //! Returns  the isothermal compressibility. Units: 1/Pa.
    /*!
     * The isothermal compressibility is defined as
     * \f[
     * \kappa_T = -\frac{1}{v}\left(\frac{\partial v}{\partial P}\right)_T
     * \f]
     */
    virtual doublereal isothermalCompressibility() const;

    //! Return the volumetric thermal expansion coefficient. Units: 1/K.
    /*!
     * The thermal expansion coefficient is defined as
     * \f[
     * \beta = \frac{1}{v}\left(\frac{\partial v}{\partial T}\right)_P
     * \f]
     */
    virtual doublereal thermalExpansionCoeff() const ;

    /**
     * @}
     * @name Activities, Standard States, and Activity Concentrations
     *
     *  This section is largely handled by parent classes, since there
     *  is only one species. Therefore, the activity is equal to one.
     * @{
     */

    //! This method returns an array of generalized concentrations
    /*!
     * \f$ C^a_k\f$ are defined such that \f$ a_k = C^a_k /
     * C^0_k, \f$ where \f$ C^0_k \f$ is a standard concentration
     * defined below and \f$ a_k \f$ are activities used in the
     * thermodynamic functions.  These activity (or generalized)
     * concentrations are used
     * by kinetics manager classes to compute the forward and
     * reverse rates of elementary reactions.
     *
     *  For a stoichiometric substance, there is
     *  only one species, and the generalized concentration is 1.0.
     *
     * @param c Output array of generalized concentrations. The
     *           units depend upon the implementation of the
     *           reaction rate expressions within the phase.
     */
    virtual void getActivityConcentrations(doublereal* c) const;

    //! Return the standard concentration for the kth species
    /*!
     * The standard concentration \f$ C^0_k \f$ used to normalize
     * the activity (i.e., generalized) concentration.
     * This phase assumes that the kinetics operator works on an
     * dimensionless basis. Thus, the standard concentration is
     * equal to 1.0.
     *
     * @param k Optional parameter indicating the species. The default
     *         is to assume this refers to species 0.
     * @return
     *   Returns The standard Concentration as 1.0
     */
    virtual doublereal standardConcentration(size_t k=0) const;

    //! Natural logarithm of the standard concentration of the kth species.
    /*!
     * @param k    index of the species (defaults to zero)
     */
    virtual doublereal logStandardConc(size_t k=0) const;

    //! Get the array of chemical potentials at unit activity for the species
    //! at their standard states at the current <I>T</I> and <I>P</I> of the solution.
    /*!
     * For a stoichiometric substance, there is no activity term in
     * the chemical potential expression, and therefore the
     * standard chemical potential and the chemical potential
     * are both equal to the molar Gibbs function.
     *
     * These are the standard state chemical potentials \f$ \mu^0_k(T,P)
     * \f$. The values are evaluated at the current
     * temperature and pressure of the solution
     *
     * @param mu0     Output vector of chemical potentials.
     *                Length: m_kk.
     */
    virtual void getStandardChemPotentials(doublereal* mu0) const;

    //! Returns the units of the standard and generalized concentrations.
    /*!
     * Note they have the same units, as their
     * ratio is defined to be equal to the activity of the kth
     * species in the solution, which is unitless.
     *
     * This routine is used in print out applications where the
     * units are needed. Usually, MKS units are assumed throughout
     * the program and in the XML input files.
     *
     * The base ThermoPhase class assigns the default quantities
     * of (kmol/m3) for all species.
     * Inherited classes are responsible for overriding the default
     * values if necessary.
     *
     * @param uA Output vector containing the units
     *
     *     uA[0] = kmol units - default  = 1
     *     uA[1] = m    units - default  = -nDim(), the number of spatial
     *                                   dimensions in the Phase class.
     *     uA[2] = kg   units - default  = 0;
     *     uA[3] = Pa(pressure) units - default = 0;
     *     uA[4] = Temperature units - default = 0;
     *     uA[5] = time units - default = 0
     *
     * @param k species index. Defaults to 0.
     * @param sizeUA output int containing the size of the vector.
     *        Currently, this is equal to 6.
     * @deprecated To be removed after Cantera 2.2.
     */
    virtual void getUnitsStandardConc(doublereal* uA, int k = 0,
                                      int sizeUA = 6) const;

    //@}
    /// @name  Properties of the Standard State of the Species in the Solution
    //@{

    //! Get the nondimensional Enthalpy functions for the species
    //! at their standard states at the current <I>T</I> and <I>P</I> of the solution.
    /*!
     * @param hrt      Output vector of  nondimensional standard state enthalpies.
     *                 Length: m_kk.
     */
    virtual void getEnthalpy_RT(doublereal* hrt) const;

    //! Get the array of nondimensional Entropy functions for the
    //! standard state species at the current <I>T</I> and <I>P</I> of the solution.
    /*!
     * @param sr   Output vector of  nondimensional standard state entropies.
     *             Length: m_kk.
     */
    virtual void getEntropy_R(doublereal* sr) const;

    //! Get the nondimensional Gibbs functions for the species
    //! in their standard states at the current <I>T</I> and <I>P</I> of the solution.
    /*!
     * @param grt  Output vector of nondimensional standard state Gibbs free energies
     *             Length: m_kk.
     */
    virtual void getGibbs_RT(doublereal* grt) const;

    //! Get the nondimensional Heat Capacities at constant
    //! pressure for the species standard states
    //! at the current <I>T</I> and <I>P</I> of the solution
    /*!
     * @param cpr   Output vector of nondimensional standard state heat capacities
     *              Length: m_kk.
     */
    virtual void getCp_R(doublereal* cpr) const;

    //!  Returns the vector of nondimensional Internal Energies  of the standard
    //!  state species at the current <I>T</I> and <I>P</I> of the solution
    /*!
     *  For an incompressible,
     * stoichiometric substance, the molar internal energy is
     * independent of pressure. Since the thermodynamic properties
     * are specified by giving the standard-state enthalpy, the
     * term \f$ P_{ref} \hat v\f$ is subtracted from the specified reference molar
     * enthalpy to compute the standard state molar internal energy.
     *
     * @param urt  output vector of nondimensional standard state
     *             internal energies of the species. Length: m_kk.
     */
    virtual void getIntEnergy_RT(doublereal* urt) const;

    //@}
    /// @name Thermodynamic Values for the Species Reference States
    //@{

    //! Returns the vector of nondimensional
    //!  internal Energies of the reference state at the current temperature
    //!  of the solution and the reference pressure for each species.
    /*!
     * @param urt    Output vector of nondimensional reference state
     *               internal energies of the species.
     *               Length: m_kk
     */
    virtual void getIntEnergy_RT_ref(doublereal* urt) const;
    //! @}

    //! Initialize the phase parameters from an XML file.
    /*!
     * initThermoXML()                 (virtual from ThermoPhase)
     *
     *  This gets called from importPhase(). It processes the XML file
     *  after the species are set up. This is the main routine for
     *  reading in activity coefficient parameters.
     *
     * @param phaseNode This object must be the phase node of a
     *             complete XML tree
     *             description of the phase, including all of the
     *             species data. In other words while "phase" must
     *             point to an XML phase object, it must have
     *             sibling nodes "speciesData" that describe
     *             the species in the phase.
     * @param id   ID of the phase. If nonnull, a check is done
     *             to see if phaseNode is pointing to the phase
     *             with the correct id.
     */
    virtual void initThermoXML(XML_Node& phaseNode, const std::string& id);

    //! Set the equation of state parameters
    /*!
     * @internal
     *
     * @param n number of parameters
     * @param c array of \a n coefficients
     *        c[0] = density of phase [ kg/m3 ]
     */
    virtual void setParameters(int n, doublereal* const c);

    //! Get the equation of state parameters in a vector
    /*!
     * @internal
     *
     * @param n number of parameters
     * @param c array of \a n coefficients
     *
     *  For this phase:
     *       -  n = 1
     *       -  c[0] = density of phase [ kg/m3 ]
     */
    virtual void getParameters(int& n, doublereal* const c) const;

    //! Set equation of state parameter values from XML entries.
    /*!
     * This method is called by function importPhase() when processing a phase
     * definition in an input file. It should be overloaded in subclasses to set
     * any parameters that are specific to that particular phase
     * model. Note, this method is called before the phase is
     * initialized with elements and/or species.
     *
     *  For this phase, the density of the phase is specified in this block.
     *
     * @param eosdata An XML_Node object corresponding to
     *                the "thermo" entry for this phase in the input file.
     */
    virtual void setParametersFromXML(const XML_Node& eosdata);
    doublereal LookupGe(const std::string& elemName);
    void convertDGFormation();

protected:
    //! Value of the Absolute Gibbs Free Energy NIST scale at T_r and P_r
    /*!
     *  This is the NIST scale value of Gibbs free energy at T_r = 298.15
     *  and P_r = 1 atm.
     *
     *  J kmol-1
     */
    doublereal m_Mu0_pr_tr;

    //! Input value of S_j at Tr and Pr    (cal gmol-1 K-1)
    /*!
     *  Tr = 298.15   Pr = 1 atm
     */
    doublereal m_Entrop_pr_tr;

    //! Input Value of deltaG of Formation at Tr and Pr    (cal gmol-1)
    /*!
     *  Tr = 298.15   Pr = 1 atm
     *
     *  This is the delta G for the formation reaction of the
     *  ion from elements in their stable state at Tr, Pr.
     */
    doublereal m_deltaG_formation_pr_tr;

    //! Input Value of deltaH of Formation at Tr and Pr    (cal gmol-1)
    /*!
     *  Tr = 298.15   Pr = 1 atm
     *
     *  This is the delta H for the formation reaction of the
     *  ion from elements in their stable state at Tr, Pr.
     */
    doublereal m_deltaH_formation_pr_tr;

    //! Input Value of the molar volume at T_r and P_r
    /*!
     *  cm^3 / gmol
     */
    doublereal m_V0_pr_tr;

    //! a coefficient (cal gmol-1 K-1)
    doublereal m_a;

    //! b coefficient (cal gmol-1 K-2) x 10^3
    doublereal m_b;

    //! c coefficient (cal K gmol-1 K) x 10^-5
    doublereal m_c;
};

}

#endif