A unified framework for modeling chemically reactive systems
Reaktoro::ChemicalQuantity Class Reference

Detailed Description

A class that provides a convenient way to retrieve chemical quantities.

Here the term chemical quantity is used in a broad sense. It means any quantity for an element, species, or phase in a chemical system that can be calculated at a chemical state whose temperature, pressure, and mole amounts of all species are known.

In the example below, the volume of a phase named Gaseous and the pH of the aqueous phase (assuming both phases were defined in the chemical system) are retrieved:

const double vol = q["phaseVolume(Gaseous)"];
const double pH = q["pH"];

The table below shows all possible quantities that can be retrieved from a ChemicalQuantity instance. The first column, Quantity, lists the names of the quantities; the second column, Units, lists the default units of the quantity; and the third column, Example, lists the formatted strings needed to retrieve a quantity.

Quantity Units Example
temperature kelvin "temperature(units=celsius)"
pressure pascal "pressure(units=bar)"
volume m3 "volume(units=cm3)"
activity "activity(CO2(aq))"
activityCoefficient "activityCoefficient(Na+)"
fugacity bar "fugacity(CO2(g))"
chemicalPotential J/mol "chemicalPotential(Cl-)"
elementAmount mol "elementAmount(Ca)"
elementAmountInPhase mol "elementAmountInPhase(Mg Aqueous)"
elementMass kg "elementMass(Fe units=g)"
elementMassInPhase kg "elementMassInPhase(C Gaseous)"
elementMolality molal "elementMolality(Cl units=mmolal)"
elementMolarity molar "elementMolarity(K units=mmolar)"
speciesAmount mol "speciesAmount(H2O(l))"
speciesMass kg "speciesMass(Calcite units=g)"
speciesMoleFraction "speciesMoleFraction(HCO3-)"
speciesMolality molal "speciesMolality(Ca++)"
speciesMolarity molar "speciesMolarity(Mg++)"
phaseAmount mol "phaseAmount(Aqueous)"
phaseMass kg "phaseMass(Dolomite)"
phaseVolume m3 "phaseVolume(Gaseous)"
pH "pH"
pE "pE"
Eh volt "Eh"
ionicStrength molal "ionicStrength"
fluidVolume m3 "fluidVolume(units=liter)"
solidVolume m3 "solidVolume(units=mm3)"
porosity "porosity"
reactionRate mol/s "reactionRate(Dolomite units=mmol/hour)"
reactionEquilibriumIndex "reactionEquilibriumIndex(Quartz)"
tag "tag"
t s "t(units=minute)"
time s "time(units=year)"
progress "progress"

#include <ChemicalQuantity.hpp>

Public Types

using Function = std::function< double()>
 A type to describe a chemical quantity function.

Public Member Functions

 ChemicalQuantity ()
 Construct a default ChemicalQuantity instance.
 ChemicalQuantity (const ChemicalSystem &system)
 Construct a ChemicalQuantity instance from a ChemicalSystem object.
 ChemicalQuantity (const ReactionSystem &reactions)
 Construct a ChemicalQuantity instance from a ReactionSystem object.
 ChemicalQuantity (const ChemicalState &state)
 Construct a ChemicalQuantity instance from a ChemicalState object.
virtual ~ChemicalQuantity ()
 Destroy this ChemicalQuantity instance.
auto system () const -> const ChemicalSystem &
 Return the chemical system of the ChemicalQuantity instance.
auto reactions () const -> const ReactionSystem &
 Return the chemical reactions of the ChemicalQuantity instance.
auto state () const -> const ChemicalState &
 Return the chemical state of the ChemicalQuantity instance.
auto properties () const -> const ChemicalProperties &
 Return the chemical properties of the ChemicalQuantity instance.
auto rates () const -> const ChemicalVector &
 Return the reaction rates of the ChemicalQuantity instance.
auto tag () const -> double
 Return the tag variable of the ChemicalQuantity instance.
auto update (const ChemicalState &state) -> void
 Update the state of this ChemicalQuantity instance.
auto update (const ChemicalState &state, double t) -> void
 Update the state of this ChemicalQuantity instance.
auto value (std::string str) const -> double
 Return the value of the quantity given as a formatted string.
auto function (std::string str) const -> Function
 Return a created function that calculates the chemical quantity from a formatted string.
auto operator[] (std::string str) const -> double
 Return the value of the quantity given as a formatted string.

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